ALBERT

Description: This paper reports on the results of measurements of changes in the temperature of a solid under the adiabatic elastic loading (thermoelastic effect), the coefficient of thermal expansion, and the Young’s modulus of a rigid-chain vitrified polymer, namely, polyimide. It has been found that there are differences in the sign and magnitude of the changes in the energy of thermal origin in samples and the work of the external force. The energy of the thermoelastic effect has been explained in terms of the influence exerted by the anharmonic expansion of a solid, with the separation of the quasi-static potential and dynamic components of the thermal energy of the solid. The loading with an external force causes a redistribution of the thermal energy. A change in the temperature of the solid corresponds to a change in the dynamic component. An energy analysis of the adiabatically loaded anharmonic oscillator has confirmed the conclusion regarding the mechanism of energy transfer and revealed that, under loading, there is a redistribution of the kinetic and potential components of the internal energy of the oscillator.

Description: X-ray diffraction patterns and nuclear gamma resonance spectra of La(Fe 0.88 Si x Al 0.12 − x ) 13 compounds in the paramagnetic state at room temperature have been investigated. It has been found that all samples have a cubic structure of the NaZn 13 type, in which Si and Al atoms disorderly substitute for iron in the crystallographic position 96 i . An analysis of the Mössbauer spectra using the fitting with doublets with different quadrupole splittings has revealed that the distributions of the aluminum and silicon impurity atoms substituting for iron differ significantly. Aluminum is statistically distributed over nine positions of the 96 i type in the generalized coordination sphere of the Fe2 atom, whereas silicon predominantly substitutes for only six of the nine positions.

Description: The influence of the granule size on the magnetic and magnetocaloric properties of ceramic sample of manganite La 0.5 Ca 0.5 MnO 3 has been investigated. Anomalies indicating the coexistence of the ferromagnetic metallic and antiferromagnetic charge-ordered phases below T C have been found in the temperature dependence of the magnetocaloric effect. It has been shown that a decrease in the granule size to 90 nm leads to the complete suppression of the antiferromagnetic charge-ordered phase.

Description: The results of the influence of the isotopic substitution of oxygen 16 O → 18 O on the susceptibility, electrical resistance, heat capacity, and the magnetocaloric effect in univalently doped manganite La 0.8 Ag 0.1 MnO 3 are presented. It has been shown that the substitution of 16 O by a heavier isotope 18 O leads to a shift in T C and affects all the measured coefficients. This result indicates the necessity of accounting the lattice dynamics when explaining the mechanism of colossal magnetoresistance in manganites.

Description: The optical and electrical properties of light-emitting diode structures with an active layer based on nanocomposite polyvinylcarbazole (PVK) films doped with nanoparticles of another light-emitting polymer, MEH-PPV, have been studied. It has been established that the size of MEH-PPV particles in the PVK matrix is of the order of 100 nm. The spectral range of photoluminescence of such structures can be changed by varying the ratio of PVK to MEH-PPV. The current-voltage characteristics of composite light-emitting diodes based on PVK: MEH-PPV films indicate p -type conductivity. It has been shown that a decrease in the MEH-PPV nanoparticle concentration in the PVK matrix shifts the threshold values of the bias for the onset of electroluminescence toward smaller values and makes the photoluminescence and electroluminescence spectra more similar to the spectrum of the white light-emitting diode. The influence of the form of the polymer and polymer nanoparticles on the mechanisms of injection and transport of charge carriers and the radiative recombination in the studied structures has been discussed.

Description: The structural, X-ray diffraction, and electrophysical studies of hybrid superconducting hetero-structures with an interlayer of cuprate antiferromagnetic Ca 1 − x Sr x CuO 2 (CSCO) with the upper electrode Nb/Au and the lower electrode Y B a 2 Cu 3 O 7 − δ (YBCO) have been carried out. It has been experimentally shown that the epitaxial growth of two cuprates, YBCO and CSCO, results in the formation of an interface on which the enrichment of the CSCO interlayer with charge carriers proceeds to a depth of about 20 nm. In this case, the conduction of the enriched CSCO region proves to be closer to metallic, whereas the CSCO film deposited onto the NdGaO 3 substrate is a Mott insulator with hopping conduction.

Description: The temperature dependences of the inverse mobility of nondegenerate two-dimensional electrons in scattering by impurity ions in heterostructures with a narrow spacer have been investigated using the Al x Ga 1 − x As/GaAs heterostructure as an example. Correlations in the arrangement of impurity ions have been taken into account in the model of hard spheres on a plane. The influence of the form of the structure factor in the electron mobility has been considered.

Description: The slip of a single edge dislocation in an elastic field of point defects chaotically distributed over a crystal with allowance for a high hydrostatic pressure has been studied theoretically. The numerical estimations have demonstrated that hydrostatic compression of some metals and alloys increases the dislocation drag force by point defects in them by several tens of percent.

Description: The effect of cyanine dye additives on the photoelectric, nonlinear optical, and photorefractive properties of polyvinyl carbazole composites based on closed single-walled carbon nanotubes has been investigated. It has been found that these characteristics are affected by the dye in which the lowest unoccupied molecular orbital (LUMO) lies below the level of the photoexcited nanotube. The addition of this dye to the composite leads to a 14-fold increase in the quantum efficiency of the generation of mobile charge carriers under irradiation by a laser (1064 nm) in the absorption region of the nanotubes. Moreover, the addition of the dye to the composite decreases the third-order susceptibility χ (3) , presumably, due to the opposite orientations of dipoles of the dye and the nanotube upon adsorption of the dye on the nanotube. The addition of the dye to the composite also provides a twofold increase in the two-beam photorefractive amplification factor of the laser beam with a wavelength of 1064 nm. The obtained values of the two-beam photorefractive amplification factor reach 120 cm −1 .

Description: This paper presents the results of the investigation of c -Si/[Si/Mo] n /Si multilayer nanoperiodic structures by X-ray absorption near-edge structure (XANES) spectroscopy using synchrotron radiation. Changes in the fine structure of XANES Mo L 2,3 spectra confirm the formation of the silicide phase on heterophase interfaces Si/Mo/Si due to the solid-phase interactions between silicon and molybdenum layers.

Description: The potential inherent in integrated characterization of multilayer periodic systems employed in development of extreme-ultraviolet mirrors was demonstrated using the example of Mo/Si structures grown by magnetron sputtering in different technological regimes. An integrated study provided mutually consistent data on the thicknesses and crystal structure of the layers, as well as on the quality of the interfaces. Measurements by atomic force microscopy permitted a comparison of surface roughness of the substrates and the multilayer systems grown on them. An analysis of the power spectral density functions revealed that low-frequency roughness is replicated from the substrate, whereas the high-frequency one can become smoothed out in the course of growth. X-ray diffractometry performed in the thin film mode showed that the Mo layers in the samples studied have different crystal structures, from the amorphous and polycrystalline to the [110]-textured one. An analysis of the transmission electron microscopy data confirmed that there is a difference in the degrees of crystallinity of Mo layers. The thicknesses of individual layers, the period, and the irreproducibility of the thicknesses and the period were determined using X-ray reflectometry. The root-mean-square roughness amplitude of the interfaces was estimated, and the existence of transition layers originating primarily from the Si layer was demonstrated. The study was used to formulate a proper strategy for the analysis of multilayer periodic systems with nanosized layers.

Description: This paper presents the results of investigating the crystal structure of thin films of the Co 40 Fe 60 composition obtained by magnetron sputtering on their magnetic properties and properties of ferromagnetic nanostructures formed from these films using the optical and electron lithography. It has been found experimentally that magnetic properties of the structures depend on the crystalline-grain sizes, which can be controlled by means of deposition of additional buffer layers of various materials ∼1 nm thick on the substrate under the ferromagnetic film. It has been shown that the crystallite size can be the main factor that determines the minimal lateral sizes of the structures with specified magnetic properties, which are formed from thin ferromagnetic films.

Description: The hydrogen chemical adsorption on a single-walled carbon nanotube (6, 6) has been studied by quantum-chemical computer simulation. Different variants of hydrogen coverage of the nanotube have been considered, and the dependences of the adsorption energy and the nanotube strain energy on the coverage density have been found. In addition, the adsorption has been considered on both the outer and inner surfaces of the nanotube wall. It has been established that some adsorption conformations are unstable, which leads to fracture of the nanotubes.

Description: Experimental evidence for the possibility of controllably transforming the habit of copper microcrystals formed by electrodeposition has been presented. Selective evolution of microcrystal facets with a specific crystallographic orientation has been performed by a premeditated change in the chemical composition of a standard sulfuric electrolyte. The experiments have proved the existence of a small particle with icosidodecahedral morphology as an intermediate stage of the evolution of the small particle from an icosahedron to a dodecahedron and demonstrated some elastic-energy relaxation channels associated with inhibition of the growth of low-energy facets of electrolytic copper microcrystals.

Description: It has been shown that the variational principle can be used as the practical way to find the electron density and the total energy in terms of the density functional theory without solving the Kohn-Sham equations (the so-called orbital-free approach). The equilibrium interatomic distances and binding energies found using examples of diatomic systems Si 2 , Al 2 , and P 2 are in good agreement with the published data. The results obtained for Si-Al, Si-P, and Al-P dimers are also close to the results obtained by the Kohn-Sham method.

Description: The dependence of the magnetization reversal field of an elliptic submicrometer magnetic particle on the parameters of the material and sample configuration has been numerically studied. A method for calculating the magnetostatic field using the Fourier transform has been described in detail. The simulation results have demonstrated, in particular, that the normalized magnetization reversal field of a particle is independent of the exchange length at its rather large values.

Description: The electron paramagnetic resonance (EPR) spectra of Eu 2+ impurity centers in SrMoO 4 crystals have been studied in the temperature range of 1.8, 100–300 K. A hyperfine structure has been simulated for 151,153 Eu of different EPR transitions observed experimentally at different temperatures and external magnetic field orientations. A unique set of all parameters of the spin Hamiltonian for the known sign of the hyperfine interaction parameters A i has been determined. It has been found that the diagonal parameters | b n 0 | of the spin Hamiltonian decrease with increasing temperature; however, the parameter b 4 4 increases. The results of the study have demonstrated that | b 2 0 ( T )/ P 2 0 ( T )| ∼ const for 151,153 Eu in this single crystal.

Description: Two samples of detonation-synthesized ultradispersed diamond have been studied using X-ray diffractometry and small-angle X-ray scattering. It has been shown based on the X-ray diffractometry data that two samples contain regions with both the diamond and graphite-like lattices. Grain radii inside both samples are evaluated from the small-angle scattering data as 30–50 nm. The samples also contain low-dimensional components. A broad Bragg peak corresponding to a set of interplanar distances from 5 to 15 nm is revealed in the small-angle scattering curve of sample no. 1. A structural model of ultradispersed diamond particles, which represents the diamond core surrounded by concentric graphite shells similar to the onionskin, is confirmed.

Description: The elastic hysteresis and residual deflection of the aluminum D16 alloy samples corresponding to the model of a circular plate clamped along its perimeter have been studied at low (the beginning of the Hooke region) mechanical stresses. It has been shown that these characteristics depend substantially (change several times) on the sample state provided by different heat treatment conditions. The non-destructive method used in this work has a high accuracy and can be used to estimate the strength, yield stress, and fatigue life of metals.

Description: The transmission/reflection spectra of bilayer structures consisting of thin amorphous and polycrystalline Pb(Zr 0.52 Ti 0.48 )O 3 ferroelectric films deposited on dielectric substrates of magnesium oxide MgO and sapphire α-Al 2 O 3 were measured in the frequency range of 5–4000 cm −1 . Based on these spectra and using the dispersion analysis method, the spectra of complex dielectric permittivity ɛ*(ν) and dynamic conductivity σ′(ν) of the films were simulated, the electrodynamic parameters of the films were determined, and the dielectric dispersion responsible for the formation of static permittivity was found.

Description: The influence of the structure factors (sizes of grains and precipitates) on the dislocation structure formed in polycrystals and alloys behind the shock wave front (elastic precursor) has been theoretically discussed in terms of the dislocation kinetic relationships and kinetic equation for the dislocation density. The critical conditions of the transition from the cellular dislocation structure to a uniform dislocation distribution have been formulated. These conditions are used to determine the dependences of the critical pressure, above which the dislocation distribution becomes uniform, on the grain size and precipitate volume density.

Description: The crystal structure of solid solutions in the Bi 1 − x Pr x FeO 3 system near the structural transition between the rhombohedral and orthorhombic phases (0.125 ≤ x ≤ 0.15) has been studied. The structural phase transitions induced by changes in the concentration of praseodymium ions and in the temperature have been investigated using X-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. It has been established that the sequence of phase transformations in the crystal structure of Bi 1 − x Pr x FeO 3 solid solutions with variations in the temperature differs significantly from the evolution of the crystal structure of the BiFeO 3 compounds with the substitution of other rare-earth elements for bismuth ions. The regions of the existence of the single-phase structural state and regions of the coexistence of the structural phases have been determined in the investigation of the crystal structure of the Bi 1 − x Pr x FeO 3 solid solutions. A three-phase structural state has been revealed for the solid solution with x = 0.125 at temperatures near 400°C. The specific features of the structural phase transitions of the compounds in the vicinity of the morphotropic phase boundary have been determined by analyzing the obtained results. It has been found that the solid solutions based on bismuth ferrite demonstrate a significant improvement in their physical properties.

Description: A general theory of the spectrum of normal waves propagating in magnetic structures with periodically modulated parameters has been developed. Based on the method of tensorial Green’s functions, spin-wave mode approach, and Floquet-Bloch theorem, a general form of the dispersion relation has been obtained for dipole-exchange spin waves propagating in a one-dimensional magnonic crystal formed by an arbitrary spatially periodic modulation of all magnetic and geometric parameters in the Maxwell’s equations and the Landau-Lifshitz equation. An original method has been proposed for taking into account an arbitrary profile of the modulation of the chosen parameters. The efficiency of the presented theory has been demonstrated using a simple example of the description of an experimental spectrum of a dynamic magnonic crystal.

Description:    According to the results of calorimetric and structural studies, the Fm {ie1202-1} m phase in K 2 NaMoO 3 F 3 remains stable at least to 100 K. No ferroelectric transformation assumed earlier has been revealed in a series of Rb 2 KMoO 3 F 3 samples prepared using various technologies. Only a phase transition of nonferroelectric origin has been observed near 195 K, and its thermodynamic characteristics have been determined. An analysis of the stability of the cubic structure of molybdenum fluorine-oxygen elpasolites-cryolites has been performed in the framework of the hypothesis on strengths of interatomic bonds. The barocaloric effect in Rb 2 KMoO 3 F 3 has been estimated. Content Type Journal Article Pages 1202-1211 DOI 10.1134/S1063783411060266 Authors E. I. Pogorel’tsev, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk, 660041 Russia E. V. Bogdanov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia M. S. Molokeev, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia V. N. Voronov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia L. I. Isaenko, Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090 Russia S. A. Zhurkov, Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090 Russia N. M. Laptash, Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, ul. Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia M. V. Gorev, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk, 660041 Russia I. N. Flerov, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk, 660041 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Single-crystal opal films have been prepared by the moving-meniscus and gravitational sedimentation methods. It has been found using conoscopy and spectroscopic ellipsometry that these photonic crystal opal films possess birefringence so that the optical indicatrix is a three-axial ellipsoid. The indicatrix axis N g is directed along the crystal growth axis, the axis N m lies in the film plane and is orthogonal to the axis N g , and the axis N p coincides with the normal to the (111) crystallographic plane, which corresponds to the triclinic system of the crystal. Content Type Journal Article Pages 1145-1151 DOI 10.1134/S1063783411060254 Authors A. I. Plekhanov, Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 1, Novosibirsk, 630090 Russia V. P. Chubakov, Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 1, Novosibirsk, 630090 Russia P. A. Chubakov, Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 1, Novosibirsk, 630090 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The inhomogeneity in the creep rate of polymers on different scales of deformation has been studied by laser interferometry. The main results have been obtained for the amorphous-crystalline polymer polytetrafluoroethylene. The deformation characteristics are the oscillation periods of the rate (jumps of deformation), oscillation amplitudes of the rate, and the scatter of these quantities. Application of computer methods for processing of the results has made it possible to determine the difference and similarity between jumpwise deformations on different structural levels, including the nanolevel. For a more distinct separation of deformation levels, the measurements have been made in a magnetic field and outside the magnetic field. Deformation jumps have been found on five levels: from 4 nm to more than 10 μm. Introduction of a sample into a magnetic field changes the characteristics of jumps; in this case, the scatter in the values of jumps always increases, whereas their average value varies differently on different scale levels. The measurement of the parameters of deformation jumps on different scales allows one to study the laws of the development of the deformation process and the evolution of structural inhomogeneities. Content Type Journal Article Pages 1234-1239 DOI 10.1134/S1063783411060321 Authors V. V. Shpeizman, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia N. N. Peschanskaya, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The structural stability of stepped Ni(755) and Ni(771) surfaces in the temperature range 20–500°C and during adsorption of oxygen and different forms of carbon has been studied using scanning tunneling microscopy and low-energy electron diffraction. A phase transition from the structure with double steps at room temperature to the structure with single steps at a temperature above 350°C has been observed on the clean Ni(755) surface. This transition disappears after oxygen adsorption at a temperature above 350dgC. In this case, the structure on the Ni(755) surface with single steps is stabilized in contrast to Ni(771), which tends to faceting during oxygen adsorption. It has been shown that fullerenes C60 form an array of one-dimensional chains at the upper boundaries of steps of the substrate, when they are adsorbed on the Ni(755) surface. Content Type Journal Article Pages 1277-1282 DOI 10.1134/S1063783411060357 Authors D. Yu. Usachev, St. Petersburg State University, Ulianovskaya str. 1, Petergof, St. Petersburg, 198504 Russia A. M. Dobrotvorskii, St. Petersburg State University, Ulianovskaya str. 1, Petergof, St. Petersburg, 198504 Russia A. Yu. Varykhalov, Helmholtz-Zentrum Berlin für Materialien und Energie, Electronenspeicherring BESSY II, Albert-Einstein-Strasse 15, Berlin, 12489 Germany A. G. Rybkin, St. Petersburg State University, Ulianovskaya str. 1, Petergof, St. Petersburg, 198504 Russia V. K. Adamchuk, St. Petersburg State University, Ulianovskaya str. 1, Petergof, St. Petersburg, 198504 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The phenomenon of multiple Bragg diffraction in low-contrast photonic crystals based on synthetic opals has been studied both experimentally and theoretically. The transmission and reflection spectra of opal films near the K point of the Brillouin zone of the face-centered cubic lattice in s -polarization exhibit the effect of anticrossing of dispersion curves corresponding to the (111) and photonic stop bands. The effect of quasi-Brewster suppression of stop bands is clearly pronounced in p -polarization. The experimental data are analyzed using the calculation of the band structure of opal with the inclusion of the polarization of incident light. Content Type Journal Article Pages 1105-1113 DOI 10.1134/S1063783411060242 Authors A. V. Moroz, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia M. F. Limonov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia M. V. Rybin, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia K. B. Samusev, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The dynamics of an exciton-polariton parametric oscillator has been investigated. A system of nonlinear differential equations has been obtained for describing the time evolution of the densities of pump polaritons and polaritons of the signal mode. It has been demonstrated that, depending on the system parameters, the time evolution of the density of polaritons can occur in the periodic and aperiodic regimes, as well as at rest. The possibility of exercising phase control of the time evolution of the system has been proved. Content Type Journal Article Pages 1283-1291 DOI 10.1134/S1063783411060151 Authors P. I. Khadzhi, Institute of Applied Physics, Academy of Sciences of Moldova, ul. Academiei 5, Chisinau, MD-2028 Moldova O. F. Vasil’eva, Taras Shevchenko Transnistria State University, ul. Dvadtsat’ Pyatogo Oktyabrya 128, Tiraspol, 3300-MD Moldova Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Single crystals of sarcosine phosphite (SarcH 3 PO 3 ) have been grown. The amino acid sarcosine is an isomer of the protein amino acid alanine. Both amino acids are described by the same chemical formula but have different structures; or, more specifically, in contrast to the alanine molecule, the sarcosine molecule has a symmetric structure. It has been found that the sarcosine phosphite compound undergoes a structural phase transition at a temperature of approximately 200 K. This result has demonstrated that compounds of achiral amino acids are more susceptible to structural phase transitions. Content Type Journal Article Pages 1274-1276 DOI 10.1134/S1063783411060217 Authors V. V. Lemanov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia S. N. Popov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia G. A. Pankova, Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol’shoi pr. 31, St. Petersburg, 199004 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The temperature and concentration dependences of the electrical resistivity π and thermal diffusivity a of Co-Cr alloys have been studied at temperatures of 400–1600 K. It has been shown that, as the temperature increases, the specific features of the electrical properties of the alloys are mainly determined by phonon scattering of carriers, and the character of the polytherms and concentration dependences is determined by the multiband scattering mechanism. Content Type Journal Article Pages 1170-1175 DOI 10.1134/S106378341106014X Authors A. D. Ivliyev, Russian State Vocational Pedagogical University, ul. Mashinostroitelei 11, Yekaterinburg, 620012 Russia Yu. V. Glagoleva, Russian State Vocational Pedagogical University, ul. Mashinostroitelei 11, Yekaterinburg, 620012 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Diamond structures with inverse and direct three-dimensional opal lattices with period of 250–530 nm were grown by microwave plasma deposition in methane-hydrogen mixtures using porous SiO 2 opal matrix and its Si replica as templates, respectively. The Si templates can be filled with diamond to the depth as large as 80 layers of the spheres. Content Type Journal Article Pages 1131-1134 DOI 10.1134/S106378341106028X Authors V. G. Ralchenko, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia D. N. Sovyk, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia A. P. Bolshakov, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia A. A. Homich, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia I. I. Vlasov, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia D. A. Kurdyukov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia V. G. Golubev, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia A. A. Zakhidov, NanoTech Institute, The University of Texas at Dallas, BE 26, 800 West Campbell Road, Richardson, Texas 75080, USA Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The mechanisms of formation of Bragg reflectance and transmittance spectra have been investigated for films of three-dimensional opal-like photonic crystals. Attention has been drawn to the fact that the spectra exhibit an additional short-period interference structure of the novel type due to the multiple Bragg diffraction of light. The spectra have been calculated in the framework of the dynamical three-wave diffraction model taking into account strong spatial modulation of the dielectric function. It has been found that short-period oscillations appear in the spectra due to the spatial quantization of additional modes with a low group velocity. Content Type Journal Article Pages 1140-1144 DOI 10.1134/S1063783411060102 Authors V. G. Fedotov, Saint Petersburg State University, Universitetskaya nab. 7-9, St. Petersburg, 199034 Russia A. V. Sel’kin, Saint Petersburg State University, Universitetskaya nab. 7-9, St. Petersburg, 199034 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The SrRuO 3 films (50 nm thick) grown by laser evaporation on (001)(LaAlO 3 ) 0.3 + (Sr 2 AlTaO 6 ) 0.7 substrates were under partially relaxed biaxial compressive mechanical stresses. The films consisted of crystallites with lateral dimensions of 40–100 nm and a relative azimuthal misorientation of about 0.9°. Ferromagnetic ordering of spins in the SrRuO 3 films was manifested by a change in the slope of the temperature dependence of their electrical resistivity ρ at T ≈ 155 K. For a magnetic field H parallel to the measuring current, the maximum values (∼7.5%) of the magnetoresistance MR = [ρ(μ 0 H = 5 T) − ρ(μ 0 H = 0)]/ρ(μ 0 H = 0) were observed at temperatures of about 100 K. At T = 95 K (μ 0 H = 5 T), the anisotropic magnetoresistance of the films was 8% and increased by a factor of approximately 1.5 with decreasing temperature to 4.2 K. Content Type Journal Article Pages 1298-1301 DOI 10.1134/S1063783411060060 Authors Yu. A. Boikov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia V. A. Danilov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Whiskers up to 1 cm in length were grown in polyvinyl alcohol (PVA) and urea solution. Raman and IR spectra discover an interaction between PVA and urea molecules. Optical and electronic microscopy data show that urea influences on PVA molecular superstructure formation. PVA whiskers prepared in urea solution can be used for organic semiconductors production which properties are determined by arrangement of polymer macromolecules. Content Type Journal Article Pages 1302-1306 DOI 10.1134/S1063783411060278 Authors I. Yu. Prosanov, Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128 Russia A. A. Matvienko, Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128 Russia B. B. Bokhonov, Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The spectrum of impurity photoabsorption of a heterostructure with quantum wells doped with shallow donors has been calculated in the energy range close to the optical phonon energy. It has been shown that the resonant feature of photoconductivity (Fano resonance) caused by the interaction of electrons with polar optical phonons depends strongly on radiation polarization when the resonance state energy is higher than the energy of the bottom of the second quantum-well subband. This dependence on polarization has been experimentally revealed in the impurity photoconductivity spectrum of the AlGaAs/GaAs heterostructure. Content Type Journal Article Pages 1253-1262 DOI 10.1134/S1063783411060035 Authors V. Ya. Aleshkin, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia A. V. Antonov, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia M. S. Zholudev, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia V. Yu. Panevin, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia L. E. Vorob’ev, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia D. A. Firsov, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia A. P. Vasil’ev, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia A. E. Zhukov, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The electronic structure of nitrogen vacancies in specially undoped aluminum nitride single crystals has been determined and the depth of the donor level of these vacancies in the band gap has been found to be ∼75 meV by combined electron paramagnetic resonance and thermoluminescence investigations. Content Type Journal Article Pages 1186-1190 DOI 10.1134/S1063783411060333 Authors V. A. Soltamov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia I. V. Ilyin, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia A. A. Soltamova, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia D. O. Tolmachev, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia E. N. Mokhov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia P. G. Baranov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The specific features of the dielectric spectra of statistical mixtures in the form of heterogeneous systems with spherical particles chaotically arranged in the space have been investigated. The distribution function of relaxation times f (τ) has been restored. It has been established that the relaxation times are continuously distributed within a wide interval [τ 1 , τ 2 ]. Different methods for broadening the relaxation time distribution interval and approximating the relaxation time distribution function f (τ) have been analyzed. It has been demonstrated that f (τ) is a nonmonotonic function with two maxima at the boundaries and a minimum in the vicinity of the midpoint of the interval [τ 1 , τ 2 ]. These features of the relaxation time distribution function are responsible for the large difference between the average relaxation frequencies of the permittivity and the dielectric loss (electrical conductivity). Content Type Journal Article Pages 1194-1197 DOI 10.1134/S1063783411060345 Authors A. V. Turik, Southern Federal University, Bol’shaya Sadovaya ul. 105/42, Rostov-on-Don, 344006 Russia S. I. Garmashov, Southern Federal University, Bol’shaya Sadovaya ul. 105/42, Rostov-on-Don, 344006 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The change in the recombination properties of plastically deformed silicon as a result of its interaction with an iron impurity introduced by diffusion at 1000°C has been studied using scanning electron microscopy and deep level transient spectroscopy. The recombination activity of dislocations and slip planes behind dislocations has been found to increase due to the accelerated formation of iron precipitates at these defects. Based on the measurements of the electron-beam-induced current, the concentration of the formed precipitates has been estimated, and their sizes have been calculated to be several hundred nanometers. Content Type Journal Article Pages 1240-1243 DOI 10.1134/S1063783411060114 Authors O. V. Feklisova, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, ul. Institutskaya 6, Chernogolovka, Moscow oblast, 142432 Russia E. B. Yakimov, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, ul. Institutskaya 6, Chernogolovka, Moscow oblast, 142432 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    A hysteresis of electron spin resonance spectra, which indicates a first-order phase transition, has been revealed in α′-(BEDT-TTF) 2 IBr 2 single crystals in the temperature range 15–30 K. Two lines corresponding to the high-temperature and low-temperature phases have been observed in the ESR spectra. Content Type Journal Article Pages 1269-1273 DOI 10.1134/S1063783411060163 Authors M. V. Kirman, Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432 Russia A. I. Dmitriev, Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432 Russia A. S. Chernen’kaya, Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432 Russia R. B. Morgunov, Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The temperature dependence of the linear permittivity and the third harmonic generation amplitude of nanocomposites representing nanoporous silica matrices (opal matrix and SBA-15) with triglycine sulfate embedded in pores has been studied in the region of the ferroelectric phase transition. A broadening of the phase transition and an increase its temperature in comparison with bulk triglycine sulfate have been revealed. The latter becomes more significant as the pore size decreases. It has been shown that the nonlinear dielectric properties of nanocomposites near the phase transition differ significantly from the properties of bulk triglycine sulfate. Content Type Journal Article Pages 1212-1215 DOI 10.1134/S1063783411060059 Authors S. V. Baryshnikov, Blagoveshchensk State Pedagogical University, ul. Lenina 104, Blagoveshchensk, Amur region, 675000 Russia E. V. Charnaya, St. Petersburg State University, Universitetskaya nab. 7-9, St. Petersburg, 199034 Russia Yu. A. Shatskaya, Blagoveshchensk State Pedagogical University, ul. Lenina 104, Blagoveshchensk, Amur region, 675000 Russia A. Yu. Milinskiy, Blagoveshchensk State Pedagogical University, ul. Lenina 104, Blagoveshchensk, Amur region, 675000 Russia M. I. Samoilovich, Open Joint Stock Company Central Scientific Research Institute of Technology “Tekhnomash,”, ul. Ivana Franko 4, Moscow, 121108 Russia D. Michel, Department of Physics and Earth Sciences, Leipzig University, Linnéstraße 5, Leipzig, 04103 Germany C. Tien, Department of Physics, National Cheng Kung University, 1 Ta-Hsueh Road, Tainan, 70101 Taiwan Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Highly porous periodic structures consisting of a three-dimensional replica of pores in the initial opal lattice have been synthesized by high-temperature thermochemical treatment of opal matrices filled with carbon compounds, followed by dissolution of silicon dioxide. It has been shown that the main phases of the composite are carbon and silicon carbide. Based on the X-ray diffraction, Raman, and IR spectroscopy data, it has been assumed that the composite contains fragments of hexagonal diamond. The photoluminescence and optical reflection spectra of the composites have been measured. Content Type Journal Article Pages 1121-1125 DOI 10.1134/S1063783411060096 Authors G. A. Emel’chenko, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia V. M. Masalov, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia A. A. Zhokhov, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia M. Yu. Maksimuk, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia T. N. Fursova, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia A. V. Bazhenov, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia I. I. Zver’kova, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia S. S. Khasanov, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia E. A. Shteinman, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia A. N. Tereshchenko, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The properties of the majority trapped-hole centers in MgO, such as g -factors, positions of absorption and luminescence bands, and temperatures of thermal destruction, have been analyzed with the emphasis on the observed regular trends and interrelations between the properties of these centers. Particular emphasis has been placed on the positively charged [Be] + and [Ca] + trapped-hole centers, which have a large cross section for recombination with conduction electrons. In these centers, a hole is localized at an oxygen ion near the impurity Be 2+ or Ca 2+ ion located at a regular cation site. The generation and transformation of defects due to the recombination of either relaxed conduction electrons with OH − -containing hole centers or cold and hot electrons with [Be] + and [Ca] + centers have been considered. Using the interrelation of the characteristics of hole centers and taking into account that the recombination emission band revealed at ∼6.8 eV is due to the Ca 2+ -containing centers that are stable below 50 K, the prospects for the EPR detection of the [Ca] + center at T 〈 4.2 K have been discussed. Content Type Journal Article Pages 1244-1252 DOI 10.1134/S1063783411060084 Authors S. A. Dolgov, Institute of Physics, University of Tartu, Riia 142, Tartu, 51014 Estonia T. Kärner, Institute of Physics, University of Tartu, Riia 142, Tartu, 51014 Estonia A. Lushchik, Institute of Physics, University of Tartu, Riia 142, Tartu, 51014 Estonia A. Maaroos, Institute of Physics, University of Tartu, Riia 142, Tartu, 51014 Estonia S. Nakonechnyi, Institute of Physics, University of Tartu, Riia 142, Tartu, 51014 Estonia E. Shablonin, Institute of Physics, University of Tartu, Riia 142, Tartu, 51014 Estonia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Three-dimensional nanocomposites consisting of an opal matrix and a metal have been prepared by the interaction of salts and oxides of different elements (Ni, Co, Fe, etc.) embedded in an opal matrix with isopropanol in the range of supercritical state parameters of the alcohol. According to X-ray powder diffraction analysis and transmission electron microscopy data, the composites consist of an X-ray amorphous opal matrix with pores filled by nanoparticles of Co (or CoO x ), metallic Ni, or Fe 3 O 4 with a magnetite structure of various morphology. The sizes of the nanoparticles do not exceed the diameter of the pores in the opal matrix. A complex investigation of the nanocomposites has been performed using the electron magnetic resonance and vibrating magnetometry methods. All the studied samples at room temperature exhibit a ferromagnetic behavior. The coercive force of the samples lies in the range from 150 Oe for iron-containing nanocomposites to 565 Oe for cobalt-containing nanocomposites. Content Type Journal Article Pages 1114-1120 DOI 10.1134/S1063783411060138 Authors S. N. Ivicheva, A. A. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991 Russia Yu. F. Kargin, A. A. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991 Russia E. A. Ovchenkov, Moscow State University, Moscow, 119991 Russia Yu. A. Koksharov, Moscow State University, Moscow, 119991 Russia G. Yu. Yurkov, A. A. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    A method for formation of photonic crystals has been proposed. The method is based on convective deposition of colloidal particles onto vertical substrates in the presence of a direct-current electric field directed perpendicular to the surface of the formed film and an alternating-current electric field applied parallel to the substrate plane. The structure and optical properties of the prepared colloidal crystals have been investigated using scanning electron microscopy, high resolution small-angle X-ray diffraction, and optical spectroscopy. Content Type Journal Article Pages 1126-1130 DOI 10.1134/S106378341106031X Authors N. A. Sapoletova, Moscow State University, Moscow, 119991 Russia N. A. Martynova, Moscow State University, Moscow, 119991 Russia K. S. Napolskii, Moscow State University, Moscow, 119991 Russia A. A. Eliseev, Moscow State University, Moscow, 119991 Russia A. V. Lukashin, Moscow State University, Moscow, 119991 Russia I. V. Kolesnik, Moscow State University, Moscow, 119991 Russia D. I. Petukhov, Moscow State University, Moscow, 119991 Russia S. E. Kushnir, Moscow State University, Moscow, 119991 Russia A. V. Vassilieva, Konstantinov Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Orlova Roshcha, Gatchina, Leningrad region, 188300 Russia S. V. Grigoriev, Konstantinov Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Orlova Roshcha, Gatchina, Leningrad region, 188300 Russia N. A. Grigoryeva, St. Petersburg State University, Universitetskaya nab. 7-9, St. Petersburg, 199034 Russia A. A. Mistonov, St. Petersburg State University, Universitetskaya nab. 7-9, St. Petersburg, 199034 Russia D. V. Byelov, Debye Institute for NanoMaterials Science, Utrecht University, Padualaan 8, Utrecht, 3508 TA The Netherlands Yu. D. Tret’yakov, Moscow State University, Moscow, 119991 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The conditions of synthesis of silicon dioxide particles with a high degree of monodispersity have been investigated. The particles have been synthesized using both the hydrolysis of tetraethoxysilane in the presence of L -arginine and a combination of this technique with the traditional Stöber method. It has been shown that the use of SiO 2 particles synthesized by the heterogeneous hydrolysis of tetraethoxysilane in the presence of the amino acid for their further growth according to the Stöber method makes it possible to obtain particles 100 nm and more in size with a narrow size distribution (the deviation of the diameter is less than 3%), a nearly perfect spherical shape, and a smooth surface. Content Type Journal Article Pages 1135-1139 DOI 10.1134/S1063783411060229 Authors V. M. Masalov, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia N. S. Sukhinina, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia G. A. Emel’chenko, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow region, 142432 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    This paper reports on a study by site-selective laser spectroscopy of low-temperature broadband fluorescence spectra of N-methyl-2-(3,5-di- tert -butyl-4-hydroxyphenyl)-[C 60 ] fulleropyrrolidine (N-MBHPhFP fullerene) molecules embedded in the crystalline toluene matrix. It has been shown that monochromatic laser excitation in the region of vibrational satellites of the pure electronic absorption band initiates structurization of the emission band of a pure electronic transition, which suggests the existence of a set of impurity centers in the crystalline host matrix. An analysis has been made of the factors accounting for replacement of the wide, inhomogeneously broadened band by a series of narrow bands, with the most essential of them being the weakness of electron-phonon coupling in the impurity center, the absence of electronic excitation transfer between the centers, and the vibronic resonance in the excited state of the set of centers. Vibration frequencies of the N-MBHPhFP fullerene in the excited electronic state have been determined. Content Type Journal Article Pages 1307-1313 DOI 10.1134/S1063783411060291 Authors B. S. Razbirin, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia E. F. Sheka, Peoples’ Friendship University of Russia, ul. Miklukho-Maklaya 6, Moscow, 117198 Russia A. N. Starukhin, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia D. K. Nel’son, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia M. Yu. Degunov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia I. V. Shukov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The features observed in the impurity photoconductivity spectra of gallium arsenide doped with shallow acceptors have been described theoretically. The features are caused by the interaction of holes with polar optical phonons. The Fano resonances associated with both the ground and excited acceptor states have been considered. The calculated widths of the resonances are in agreement with available experimental data. Content Type Journal Article Pages 1176-1185 DOI 10.1134/S1063783411060023 Authors V. Ya. Aleshkin, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia D. I. Burdeiny, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia M. S. Zholudev, Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhni Novgorod, 603950 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The dynamics of nucleation of microcracks in the region of a developing macroscopic crack has been studied using scanning electron microscopy during in situ experiment and the acoustic emission method. An explosive-like nucleation of microcracks and the influence of dissipative properties of a material on the size and the rate of redistribution of local stresses of the microcracks have been established. Each of nucleations of microscopic and mesoscopic defects is considered as an act of local testing of the dissipative ability of the system, and the interaction between microcracks is determined by relaxation processes when the ability is sufficient. With deteriorating dissipative properties (with increasing residence time under loading, deformation rate, etc.), an elastic linear interaction becomes possible, and the macroscopic fracture occurs. In the microcrack dynamics, a specific ductile-brittle transition is determined by a time deterioration of the dissipative properties of the material under the action of a mechanical load. Generally, as a large latent energy is stored during deformation, a macroscopic fracture can be caused by any little discrete structural transformation. Content Type Journal Article Pages 1223-1233 DOI 10.1134/S1063783411060199 Authors A. M. Leksowskij, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia B. L. Baskin, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The piezoelectric activity of protein amino acids and their compounds has been measured using the pulse method at a frequency of 10 MHz. It has been established that, at room temperature, the piezoelectric effect is not observed in α-glycine (achiral amino acid) and protein amino acids of the L modification, namely, methionine, phenylalanine, and tryptophan. An assumption has been made that this phenomenon is associated with the enhanced damping of elastic vibrations excited in samples due to the piezoelectric effect. Content Type Journal Article Pages 1191-1193 DOI 10.1134/S1063783411060205 Authors V. V. Lemanov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia S. N. Popov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia G. A. Pankova, Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol’shoi pr. 31, St. Petersburg, 199004 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    A scheme of a fiber chemical sensor of amine-type compounds has been implemented. The sensor includes a film nanostructure deposited on the end face of an optical fiber 600 μm in diameter. The film consists of luminescent silica nanoparticles modified by functional pyrylocyanine dye, silver nanoparticles, and a photonic crystal opal film. An additional coating of the sensor film from above by a porous selective mirror, such as a photonic crystal, and introduction of silver nanoparticles 5–7 nm in diameter into it make it possible to increase the sensor sensitivity by an order of magnitude. Content Type Journal Article Pages 1152-1154 DOI 10.1134/S1063783411060072 Authors I. A. Boldov, Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 1, Novosibirsk, 630090 Russia A. S. Kuch’yanov, Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 1, Novosibirsk, 630090 Russia A. I. Plekhanov, Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Koptyuga 1, Novosibirsk, 630090 Russia N. A. Orlova, Vorozhtsov Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 9, Novosibirsk, 630090 Russia I. Yu. Kargapolova, Vorozhtsov Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 9, Novosibirsk, 630090 Russia V. V. Shelkovnikov, Vorozhtsov Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 9, Novosibirsk, 630090 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Poly- and single-crystal films of betaine phosphite deuterated to ∼20% have been grown by evaporation on NdGaO 3 (001) substrates with a preliminarily deposited planar interdigital structure of electrodes. The small-signal dielectric response in the 0.1–100.0-kHz frequency range has revealed a strong anomaly in capacitance upon the transition of the films to the ferroelectric state. Application of a bias field brings about suppression and a slight shift of the dielectric anomaly toward higher temperatures. The strong-signal dielectric response has been studied by the Sawyer-Tower method over the frequency range 0.06–3.00 kHz both in the para- and ferroelectric phases. In contrast to the case of a plane-parallel capacitor, in the planar structure studied, the dielectric hysteresis loops exhibit a very small coercivity at low frequencies, which grows with increasing frequency. This difference should be assigned to different domain structures formed in a planeparallel capacitor and in a planar structure in a saturating field. The growth of hysteresis with increasing frequency in a planar structure is considered to be associated with the domain wall motion. Content Type Journal Article Pages 1216-1222 DOI 10.1134/S1063783411060047 Authors E. V. Balashova, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia B. B. Krichevtsov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia V. V. Lemanov, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The concentration of unbound neutral anion vacancies in cerium gadolinium ceramics Ce 0.8 Gd 0.2 O 1.9 with a submicrocrystalline structure has been determined using low-temperature helium defectoscopy at temperatures ranging from 613 to 773 K and at saturation pressures from 0.05 to 12 MPa. It has been found that the energy of dissociation of impurity-vacancy complexes is 1.1 ± 0.2 eV, and the energy of dissolution of helium in defects is −0.8 ± 0.2 eV. The obtained results have been compared both with the experimental data on the energy of interaction between helium and ions of the cerium gadolinium ceramics and with the results of the quantum-chemical calculations. It has been demonstrated that the anomalously low value of the energy of helium dissolution in the studied ceramic samples is determined by the chemical interaction of helium with the nearest environment of the cerium cations. Content Type Journal Article Pages 1198-1201 DOI 10.1134/S1063783411060175 Authors A. Ya. Kupryazhkin, Ural Federal University named after the first President of Russia B. N. Yeltsin (on the basis of Ural State Technical University-UPI), ul. Mira 19, Yekaterinburg, 620002 Russia M. A. Kovalenko, Ural Federal University named after the first President of Russia B. N. Yeltsin (on the basis of Ural State Technical University-UPI), ul. Mira 19, Yekaterinburg, 620002 Russia A. V. Koromyslov, Ural Federal University named after the first President of Russia B. N. Yeltsin (on the basis of Ural State Technical University-UPI), ul. Mira 19, Yekaterinburg, 620002 Russia A. N. Zhiganov, Ural Federal University named after the first President of Russia B. N. Yeltsin (on the basis of Ural State Technical University-UPI), ul. Mira 19, Yekaterinburg, 620002 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    A study is reported of the effect of chemisorbed O 2 and CO molecules on the properties of structures of the type “nanoscale-ytterbium-film-Si(111) silicon substrate” and, in particular, on the reactions between a metal and silicon. It has been shown that chemisorption of the above molecules on Yb-Si(111) structures initiates partial or total suppression of growth of ytterbium silicide and that the effect of adsorbates on reactions at the metal-silicon interface depends on the thickness of the ytterbium nanolayer. Indeed, at a film thickness of 8 monolayers and higher oxygen doses (360 Langmuir), chemisorbed molecules suppress completely the silicide formation process. With ytterbium films of larger thicknesses (16 monolayers) and higher doses of oxygen (360 Langmuir) or carbon monoxide (480 Langmuir), while the silicide does grow, this apparently takes place only in ytterbium nanofilm layers closest to the substrate. The effect of adsorbed molecules on the silicide formation becomes less pronounced also with decreasing number of these molecules on the surface, i.e., as their dose decreases. Content Type Journal Article Pages 1292-1297 DOI 10.1134/S1063783411060187 Authors M. V. Kuz’min, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia M. A. Mittsev, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    The spectra of spontaneous and stimulated luminescence of Lu 2 O 3 : Eu (7 at %) nanopowders at different optical pumping intensities have been investigated. The obtained results—changes in the shape of the red luminescence spectra and in the lifetime of the 5 D 0 excited state of Eu 3+ ions—indicate the onset of superluminescence with an increase in the excitation power. It has been found that an increase in the optical pumping intensity leads to a decrease in the luminescence decay time of the Lu 2 O 3 : Eu (7 at %) phosphor in the stimulated luminescence regime and to an increase in the quantum efficiency of red luminescence with a maximum at 611 nm. Content Type Journal Article Pages 1263-1268 DOI 10.1134/S1063783411060126 Authors A. N. Gruzintsev, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, ul. Institutskaya 6, Chernogolovka, Moscow oblast, 142432 Russia G. A. Emel’chenko, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow oblast, 142432 Russia Yu. V. Yermolayeva, State Scientific Institution “Institute for Single Crystals,”, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkov, 61178 Ukraine V. M. Masalov, Institute of Solid State Physics, Russian Academy of Sciences, ul. Institutskaya 2, Chernogolovka, Moscow oblast, 142432 Russia A. V. Tolmachev, State Scientific Institution “Institute for Single Crystals,”, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkov, 61178 Ukraine P. Benalloul, Institut des NanoSciences de Paris, Unite Mixte de Recherche (UMR 7588) du CNRS, de l’Universit Pierre et Marie Curie-Paris 6, 140 rue de Lourmel, Paris, 75015 France C. Barthou, Institut des NanoSciences de Paris, Unite Mixte de Recherche (UMR 7588) du CNRS, de l’Universit Pierre et Marie Curie-Paris 6, 140 rue de Lourmel, Paris, 75015 France Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Hybrid photonic crystals consisting of a thin-film opal and a thin profiled gold film situated on the surface or inside the opal have been prepared. The optical transmittance spectra of hybrid crystals have been studied. It has been found that the spectra exhibit minima due to diffraction resonances in the photonic crystal and bands of enhanced transmission due to transfer of radiation through the metal film surface by plasmon polaritons. It has been shown that the transmittance spectra of hybrid crystals with a metal film on the surface are subjected to a stronger modification than the hybrids having a metal film inside the crystal. Content Type Journal Article Pages 1161-1169 DOI 10.1134/S1063783411060308 Authors A. S. Romanova, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Günther-Scharowsky-Strasse 1/Bau 24, Erlangen, D-91058 Germany A. V. Korovin, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Günther-Scharowsky-Strasse 1/Bau 24, Erlangen, D-91058 Germany S. G. Romanov, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Günther-Scharowsky-Strasse 1/Bau 24, Erlangen, D-91058 Germany Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description:    Three-dimensional periodic solid-state film structures with a face-centered cubic lattice and a high degree of perfection have been prepared from monodisperse particles of styrene copolymers with methacrylic acid. It has been shown that these structures can be successfully used not only as model objects for studying specific features of light propagation in photonic crystals but also as templates for synthesizing inverse opal-like structures. The influence of the degree of hydrophilization of the surface layer of polymer particles forming a polymer template and the template synthesis conditions on the quality of an inverse opal-like TiO 2 -based structure has been analyzed. Content Type Journal Article Pages 1155-1160 DOI 10.1134/S1063783411060230 Authors A. Yu. Menshikova, Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol’shoi pr. 31, St. Petersburg, 199004 Russia N. N. Shevchenko, Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol’shoi pr. 31, St. Petersburg, 199004 Russia I. V. Bugakov, Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol’shoi pr. 31, St. Petersburg, 199004 Russia A. V. Yakimansky, Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol’shoi pr. 31, St. Petersburg, 199004 Russia A. V. Sel’kin, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 6

Description: The composite layers formed by drying a Fe 3 O 4 -SiO 2 -based colloidal solution were studied. The colloidal solution was obtained by the precipitation of Fe 3 O 4 in the presence of highly dispersed silicon dioxide synthesized by the sol-gel method from a tetraethoxysilane alcohol solution. The microstructure and composition of the layers were analyzed using scanning electron microscopy, energy-dispersive X-ray microanalysis, thermal nitrogen desorption, and Raman spectroscopy. The emphasis was placed on the study of phase transitions in iron oxides under laser radiation. It was found that the tetraethoxysilane content has a substantial influence on the ratio of iron oxide and silicon dioxide in the layer, the specific surface area of SiO 2 powders, the threshold laser radiation power necessary to induce the Fe 3 O 4 α -Fe 2 O 3 phase transformation, and on the position of the maximum of the absorption band corresponding to the A 1 g vibrations in α-Fe 2 O 3 .

Description: Ferroelectric films of betaine arsenate and partially deuterated betaine arsenate have been grown by evaporation on LiNbO 3 , α-Al 2 O 3 , and NdGaO 3 substrates with a preliminarily deposited structure of interdigitated electrodes, as well as on the Al/glass substrate. This paper presents the results of the examination of the block structure of the films in a polarizing microscope, the X-ray diffraction analysis of their crystal structure, and the investigation of the dielectric properties in a measuring field oriented both parallel and perpendicular to the plane of the film. The transition of the films to the ferroelectric state at T = T c is accompanied by anomalies of the capacitance of the structure, an increase in the dielectric loss, and the appearance of dielectric hysteresis loops. The growth of the films from a solution of betaine arsenate in a heavy water leads to an increase in the ferroelectric transition temperature from T c = 119 K in the films without deuterium to T c = 149 K, which corresponds to the degree of deuteration of approximately 60–70%. The dielectric and structural properties of the films are compared with those of the betaine arsenate single crystals and the previously studied films of betaine phosphite and glycine phosphite.

Description: An extended critical state model has been developed. The model has considered the equilibrium magnetization of a surface layer and the magnetization of the central region of a superconducting sample. The magnetic flux distributions in the sample have been calculated. An analytical dependence of the critical current density on the magnetic field with different behaviors in strong and weak fields has been proposed. A relation of the asymmetry of the magnetization loops and the critical current density to the sample size has been established. The model is applicable to the parameterization of magnetization loops of single-crystal and polycrystalline superconductors.

Description: A simple model of the effect of an adsorbed submonolayer on the direct-current (dc) conductivity of epitaxial graphene formed on a semiconductor substrate, which takes into account the dipole-dipole repulsion of adatoms, has been proposed. It has been shown using the example of two limiting special cases that the adsorbed layer increases the dc conductivity of epitaxial graphene. Numerical estimations have been performed for the adsorption of atomic hydrogen and oxygen.

Description: The size dependences of the temperature and heat of melting of transition metal nanoclusters (Ni, Au, Cu, Ag) have been investigated using the isothermal molecular dynamics and tight-binding potential. It has been shown that the heat of melting Λ for nanoclusters approximately 1 nm in size should be two to three times less than the macroscopic heat of melting Λ (∞) . It has been found that the heat of melting Λ decreases with a decrease in the size of nanoclusters and, in some approximation, depends linearly on their inverse radius R −1 .

Description: Precision measurements of the strain rate were performed for the first time by laser Doppler deformometry in the mode of uniaxial tension of polytetrafluoroethylene (PTFE) samples unirradiated and exposed to 60 Co γ-radiation to a dose of 30 kGy at room temperature in air. The results of deformation tests of initial and γ-irradiated PTFE samples under tension and compression were compared. The trend toward an increase in the amplitude of both nano- and microscale steps under tension in comparison with those under uniaxial compression was shown. Root-mean-square deviations of the strain rate were calculated taking into account microscale steps over the entire strain range depending on the stress and for nanoscale steps within the displacement Δ l 0 = 0.325 μm. It was found that the root-mean-square deviation increases when passing from uniaxial compression to tension under testing conditions and is larger for γ-irradiated samples than for unirradiated ones. As a possible cause of the dependence of strain step characteristics on the loading type, the specific features of the behavior of nano- and microcrack arrays under tension and compression were considered.

Description:    A strict analytical expression for the Fermi energy of electrons in a thin metallic plate as a function of the plate thickness at a given electron density has been derived for the first time. The derivation has been carried out taking into account the size quantization in the free-electron approximation at zero temperature. Content Type Journal Article Pages 901-907 DOI 10.1134/S106378341105009X Authors V. D. Dymnikov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The dislocation structure of titanium dichalcogenide single crystals has been investigated. It has been established that the basis of the structure consists of dislocations that lie in the basal plane, are predominantly edge dislocations, and are responsible for the strain behavior of the material. There are also growth dislocations that are predominantly screw dislocations and form dislocation networks. A relationship is revealed between the nature of the chalcogen and the character of the defect structure. Content Type Journal Article Pages 1047-1055 DOI 10.1134/S1063783411050106 Authors E. G. Galieva, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof’i Kovalevskoi 18, Yekaterinburg, 620990 Russia O. V. Antonova, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof’i Kovalevskoi 18, Yekaterinburg, 620990 Russia P. E. Panfilov, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof’i Kovalevskoi 18, Yekaterinburg, 620990 Russia A. N. Titov, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof’i Kovalevskoi 18, Yekaterinburg, 620990 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The magnetic properties of samples of nanoporous carbon with palladium clusters prepared from polycrystalline SiC have been studied over a wide range of temperatures. The specific magnetic moment rapidly decreases with increasing temperature. The obtained experimental magnetization curves have a nonlinear character but do not reach saturation even in a field of 10 kOe. Being constructed as functions of H / T , they lie on a universal curve, which suggests superparamagnetism of the system. The experimental curves have a hysteresis. The coercive force, first, decreases with increasing temperature and, then (in the range of 5–20 K), increases, thus forming a notch singularity. On the contrary, the residual magnetization rapidly decreases with increasing temperature. A conclusion on the prevailing contribution of superparamagnetic clusters to the magnetic subsystem is made. Content Type Journal Article Pages 1017-1024 DOI 10.1134/S1063783411050076 Authors A. M. Danishevskii, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia T. L. Makarova, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia A. A. Sitnikova, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia B. D. Shanina, Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, pr. Nauki 41, Kiev, 03028 Ukraine Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The transport properties, ac susceptibility χ, and EPR spectra have been studied for the insulator polycrystalline manganite Pr 2/3 Ca 1/3 MnO 3 undergoing the orbital (O) and charge (C) orderings below T CO ∼ 250 K that lead to antiferromagnetic (AF) ordering below T N ≈ 155 K. Above T C ∼ 110 K, the χ′( T ) dependence indicates that the sample contains a phase undergoing a second-order transition from the paramagnetic to ferromagnetic state. In the vicinity of T C , the colossal magnetoresistance effect is observed. The EPR spectrum characteristics are sensitive to the development of the O/C and AF orderings, and they show peculiarities at T CO and T N . Between T CO and T N , the temperature dependence of the g factor exhibits a characteristic point that can be related to the appearance of the electric polarization revealed in manganites of this class. Content Type Journal Article Pages 964-969 DOI 10.1134/S1063783411050258 Authors V. A. Ryzhov, Konstantinov Nuclear Physics Institute, Russian Academy of Sciences, Orlova roshcha, Gatchina, Leningrad oblast, 188300 Russia A. V. Lazuta, Konstantinov Nuclear Physics Institute, Russian Academy of Sciences, Orlova roshcha, Gatchina, Leningrad oblast, 188300 Russia I. A. Kiselev, Konstantinov Nuclear Physics Institute, Russian Academy of Sciences, Orlova roshcha, Gatchina, Leningrad oblast, 188300 Russia V. P. Khavronin, Konstantinov Nuclear Physics Institute, Russian Academy of Sciences, Orlova roshcha, Gatchina, Leningrad oblast, 188300 Russia I. O. Troyanchuk, Joint Institute of Solid State and Semiconductors Physics, National Academy of Sciences of Belarus, ul. P. Brovki 17, Minsk, 220072 Belarus S. V. Trukhanov, Joint Institute of Solid State and Semiconductors Physics, National Academy of Sciences of Belarus, ul. P. Brovki 17, Minsk, 220072 Belarus Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    A series of BaTiO 3 /Ba 1 − x Sr x TiO 3 (BT/BST) superlattices were prepared by pulsed laser deposition on MgO substrates with a constant period of 80 Å (40 Å BT and 40 Å BST) and varying compositions of the BST layer so that the Ba/Sr concentration ratios were 0/100, 30/70, 40/60, 50/50, 60/40, 70/30, 100/0. The soft mode E (1TO) of the polarized Raman spectra transformed depending on the Ba/Sr ratio in the BST layer. As the Sr concentration in the BST layers increased from 0 to 100%, the E (1TO) soft mode half-width varied from 171 to 103 cm −1 and its frequency increased from 31 to 109 cm −1 due to the interaction between the epitaxial layers forming the superlattices. Content Type Journal Article Pages 1062-1066 DOI 10.1134/S1063783411050192 Authors O. A. Maslova, Southern Federal University, ul. Bolshaya Sadovaya 105/42, Rostov-on-Don, 344006 Russia Yu. I. Yuzyuk, Southern Federal University, ul. Bolshaya Sadovaya 105/42, Rostov-on-Don, 344006 Russia N. Ortega, Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, PO Box 23334, San Juan, Puerto Rico 00931-3334, USA A. Kumar, Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, PO Box 23334, San Juan, Puerto Rico 00931-3334, USA R. S. Katiyar, Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, PO Box 23334, San Juan, Puerto Rico 00931-3334, USA Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Possible types of spatially modulated periodic antiferromagnetic structures in a uniaxial rhombohedral multiferroic with BiFeO 3 crystal symmetry have been studied depending on the ratio of the uniaxial anisotropy and magnetoelectric interaction parameters. It has been shown that, along with symmetric cycloid antiferromagnetic structures with zero transverse component of the antiferromagnetism vector, there are changes in the antiferromagnetism vector direction with both right and left nonzero components of the antiferromagnetic moment, which are branched from the high-symmetry spatially modulated distribution. These solutions degenerate into a homogeneous state at a critical value of the normalized easy-plane anisotropy parameter. The existence of the found spatially inhomogeneous antiferromagnetic states with an incommensurate period can lead to additional features in magnetoelectric properties in multiferroics of the type under consideration near magnetic phase transitions in electric and magnetic fields. Content Type Journal Article Pages 970-977 DOI 10.1134/S1063783411050155 Authors N. E. Kulagin, State University of Management, Ryazanskii pr. 99, Moscow, 109542 Russia A. F. Popkov, Moscow Institute of Electronic Technology, pr. 4806, str. 5, Zelenograd, Moscow oblast, 124498 Russia A. K. Zvezdin, Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    This paper reports on experimental and theoretical investigations of light diffraction from thin films of synthetic opal. The diffraction patterns have been studied visually and recorded in different scattering geometries with the films illuminated with white unpolarized light. The diffraction pattern obtained with the film illuminated with a light beam along the [111] axis, which is normal to the film surface, has C 6 symmetry and consists of six strong reflections arranged symmetrically with respect to the incident beam. This pattern becomes substantially more complicated when the film is illuminated by white light at an arbitrary angle to the [111] axis. An experimental study of the spectral response and angular relations of the diffraction patterns has established a fairly full pattern of transformation of diffraction reflections obtained under variation of the angle of light incidence on an opal film. The remarkably good matching of experimental and calculated data provides compelling evidence for light diffraction from thin opal films being two-dimensional. Content Type Journal Article Pages 1056-1061 DOI 10.1134/S106378341105026X Authors A. K. Samusev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia K. B. Samusev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia M. V. Rybin, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia M. F. Limonov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia E. Yu. Trofimova, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia D. A. Kurdyukov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia V. G. Golubev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Magnetic and resonance studies of the system of polycrystalline samples of self-doped manganites La x MnO 3 + δ ( x = 0.815, 0.90, 0.94, 0.97, and 1.0) have been performed in a temperature range of 77–300 K. According to 55 Mn NMR data, all samples contain a ferromagnetic phase at 77 K. As the defect density increases ( x changes from 1.0 to 0.815), samples become more magnetically ordered. In this case, the ferromagnetic state of the system gradually changes from a mixed state in which both ferromagnetic insulating (basic) and ferromagnetic metal (for x = 0.97 and 1.0) phases coexist to only the ferromagnetic metal state (for x = 0.815 and 0.90). It has been shown that both ferromagnetic metal and ferromagnetic insulating phases are inhomogeneous, and either phase consists of two phases with different dynamics of nuclear spins and different Curie temperatures. The diagram of the magnetic phase state of the La x MnO 3 + δ system ( x = 0.815, 0.90, 0.94, 0.97, 1.0) has been constructed for a temperature range of 120–240 K and Mn 4+ contents of 12–30%. Content Type Journal Article Pages 957-963 DOI 10.1134/S1063783411050301 Authors T. N. Tarasenko, Donetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine, str. R. Luxemburg 72, Donetsk, 83114 Ukraine A. S. Mazur, Donetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine, str. R. Luxemburg 72, Donetsk, 83114 Ukraine A. I. Linnik, Donetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine, str. R. Luxemburg 72, Donetsk, 83114 Ukraine V. T. Dovgii, Donetsk Institute for Physics and Engineering named after O.O. Galkin, National Academy of Sciences of Ukraine, str. R. Luxemburg 72, Donetsk, 83114 Ukraine G. I. Makovetskii, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, str. P. Brovki 19, Minsk, 220072 Belarus K. I. Yanushkevich, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, str. P. Brovki 19, Minsk, 220072 Belarus Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The current-voltage characteristics of ceramic (granular) YBa 2 Cu 3 O 6.95 samples preliminarily magnetized in different transverse magnetic fields H treat have been measured in a zero field ( H ext = 0) at T = 77.3 K for elucidating specific features of dissipation in superconducting grains of high-temperature superconductors (HTSCs). The current-voltage curves measured in the range 0 ≤ H trap ≤ H c 2J (where H trap is the magnetic field trapped as a result of the pretreatment in H treat and H c 2J is the upper critical field of the Josephson weak links) have been used to construct the field dependences of the magnetoresistance ρ A ( H treat ) j = const of superconducting grains. It has been established that the magnetoresistance ρ A of the superconducting grains is significantly lower than the magnetoresistance ρ J for the Josephson medium. The dependence of ρ A on H treat and on the transport current density j has been investigated. It has been shown that the dependences ρ A ( H treat ) j = const exhibit a clearly pronounced tendency to saturation, ρ satur , and the value of ρ satur increases with increasing j . It has been found that the lower critical field H c 1A of the superconducting grains strongly depends on the transport current density. Content Type Journal Article Pages 914-921 DOI 10.1134/S1063783411050295 Authors T. V. Sukhareva, National Science Center “Kharkov Institute of Physics and Technology,”, National Academy of Sciences of Ukraine, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine V. A. Finkel, National Science Center “Kharkov Institute of Physics and Technology,”, National Academy of Sciences of Ukraine, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    A method has been developed for determining magnetic and electrical characteristics of film nanostructures containing magnetic nanoparticles from dispersion curves of surface spin waves propagating in these nanostructures. The dispersion curves of spin waves are determined by the dynamics of the spin component described by the generalized Landau-Lifshitz equations and an alternating electromagnetic field induced by a spin wave. Since spin waves are very sensitive to inhomogeneity of magnetic parameters, spin disorder, and conductivity of an object near or inside which these waves propagate, they can be used for determining magnetic and electrical characteristics of the objects under investigation. The developed calculation method, which can be employed both in spin-wave spectroscopy and in analysis of dispersion curves obtained by other methods, has been used for determining parameters of heterostructures consisting of a SiO 2 film with Co nanoparticles on a GaAs substrate. It has been found from the shape of dispersion curves of the surface spin waves that, in the film near the interface, spins of the nanoparticles are close to a ferromagnetic ordering, whereas near the free surface, the spin orientation of nanoparticles is more chaotic. It has been revealed that a conducting layer is formed in GaAs, and the SiO 2 (Co) film near the interface has an increased conductivity. Content Type Journal Article Pages 1078-1091 DOI 10.1134/S1063783411050179 Authors L. V. Lutsev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The conditions of formation, the structure, and the stability of 0-degree domain walls with noncircular trajectories of the magnetization vector in cubic ferromagnets with induced uniaxial anisotropy along the [011] direction have been investigated. It has been found that magnetic inhomogeneities with such topology can appear only in an external magnetic field perpendicular to the domain wall plane. It has been shown that the Euler-Lagrange equations in the low-field limit can be reduced to second-order linear differential equations, whose solutions describe the structure of the above inhomogeneities, while the eigenvalues of the corresponding differential operators specify their stability conditions. Content Type Journal Article Pages 1005-1012 DOI 10.1134/S1063783411050180 Authors E. B. Magadeev, Bashkir State University, ul. Zaki Validi 32, Ufa, 450074 Bashkortostan, Russia R. M. Vakhitov, Bashkir State University, ul. Zaki Validi 32, Ufa, 450074 Bashkortostan, Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    A theory has been constructed for rigorously describing a spectrum of hybrid electromagnetic-spin waves on an arbitrarily magnetized screened layered structure consisting of ferromagnetic, ferroelectric, and several dielectric layers with the inclusion of an arbitrary pinning of spins on the surface of a ferromagnetic film. The dependence of dispersion characteristics of the layered structure on the surface spin pinning parameter and on the permittivity of the ferroelectric layer has been investigated theoretically. Content Type Journal Article Pages 1033-1042 DOI 10.1134/S1063783411050118 Authors N. Yu. Grigoryeva, St. Petersburg Electrotechnical University “LETI,”, ul. Professora Popova 5, St. Petersburg, 197376 Russia R. A. Sultanov, St. Petersburg Electrotechnical University “LETI,”, ul. Professora Popova 5, St. Petersburg, 197376 Russia B. A. Kalinikos, St. Petersburg Electrotechnical University “LETI,”, ul. Professora Popova 5, St. Petersburg, 197376 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The linear muffin-tin orbital method in the local density approximation (LDA + U ) explicitly considering Coulomb correlations has been applied to calculate the electronic structure, magnetic moments, and parameters of the Heisenberg exchange interaction for cobalt ions in BaCoS 2 . Five solutions close in total energy with various orbital ordering of Co 2+ ions and almost identical spin magnetic moments μ = 2.32μ B of the Co 2+ ion 3 d -shell have been found. The BaCoS 2 ground state can be considered as a set of energy-degenerate orbital-ordered configurations of Co 2+ ions in the high-spin state. Content Type Journal Article Pages 978-984 DOI 10.1134/S1063783411050325 Authors V. M. Zainullina, Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620990 Russia M. A. Korotin, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620990 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    A nanocomposite chrysotile-KDP (KH 2 PO 4 ) was prepared. KDP was introduced into empty nanochannels of chrysotile asbestos with diameters of ∼5 nm. Thermal conductivity κ and heat capacity at a constant pressure C p of the samples of chrysotile asbestos and nanocomposite chrysotile asbestos-KDP were measured in a temperature range of 80–300 K. Based on the analysis of the behavior of temperature dependences κ( T ) and C p ( T ) of the composite, temperatures of the ferroelectric transition T F for KDP in nanochannels of chrysotile asbestos were determined. It turned out to be equal to ∼250 K at T F ∼ 122 K for massive KDP samples. Content Type Journal Article Pages 1099-1103 DOI 10.1134/S1063783411050167 Authors Yu. A. Kumzerov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia N. F. Kartenko, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia L. S. Parfen’eva, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia I. A. Smirnov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia A. V. Fokin, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia D. Wlosewicz, Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Ok’olna 2, Wroclaw, 50-950 Poland H. Misiorek, Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Ok’olna 2, Wroclaw, 50-950 Poland A. Jezowski, Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Ok’olna 2, Wroclaw, 50-950 Poland Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The method and results of calculating the coefficient of transmission of a circular ultrasound wave through a multilayer ferromagnet/nonmagnet dielectric system with allowance for excitation of spin waves in magnetic layers are presented. The dependence of the resonance structure of the transmittance spectrum on the number of layers and the magnetic field strength has been studied. Content Type Journal Article Pages 1025-1032 DOI 10.1134/S1063783411050283 Authors A. A. Shtygashev, Novosibirsk State Technical University, pr. K. Marksa 20, Novosibirsk, 630092 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Crystallographically oriented channels with bottlenecks in the regions of reflection of the pulses have been obtained in aluminum yttrium garnet during multipulsed nanosecond breakdown from the anode under voltages of 100–140 kV, and the propagation rate of the fronts of the phase transition in this voltage range has been determined. It has been shown that the character of the observed pattern of the sequential formation of separate chains of the complete breakdown structure indicates that the channel is formed only locally and immediately at the point of time of passing the breakdown front since the maximal field strength, the magnitude of which determines the diameter of the breakdown channel, is observed in the vicinity of the breakdown front. Content Type Journal Article Pages 933-935 DOI 10.1134/S1063783411050234 Authors I. F. Punanov, Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, ul. Amundsena 106, Yekaterinburg, 620016 Russia R. V. Emlin, Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, ul. Amundsena 106, Yekaterinburg, 620016 Russia A. S. Gilev, Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, ul. Amundsena 106, Yekaterinburg, 620016 Russia S. O. Cholakh, Ural State Technical University—Ural Polytechnical University named after First President of the Russian Federation B.N. El’tsyn, ul. Mira 19, Yekaterinburg, 620002 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The electrical interaction of a non-relativistic point particle (charge, dipole) with a flat metal surface has been studied in the case of lateral particle motion in vacuum with a constant velocity. A new representation of attractive and friction forces has been obtained in the in the continuous medium model for metals. For fast particles moving close enough to the surface, the repulsive interaction has been detected in the Drude model. Content Type Journal Article Pages 908-913 DOI 10.1134/S106378341105012X Authors V. I. Kesaev, North-Ossetian State University, ul. Vatutina 46, Vladikavkaz, 362025 North Ossetia-Alania, Russia I. N. Maliev, North-Ossetian State University, ul. Vatutina 46, Vladikavkaz, 362025 North Ossetia-Alania, Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The supercell Pd 16 H has been investigated in order to describe the hydrogen migration in the palladium lattice, where the hydrogen atom moves between symmetric interstitial sites. Ab initio calculations of the barriers for hydrogen diffusion in relaxed and unrelaxed metal lattices have been performed in the local density approximation, and the charge transfer during motion of hydrogen has been calculated. The conclusion has been drawn that the hydrogen migration in palladium occurs predominantly along the octapore-tetrapore-octapore trajectory. Content Type Journal Article Pages 896-900 DOI 10.1134/S1063783411050143 Authors Yu. M. Koroteev, National Research Tomsk Polytechnic University, pr. Lenina 30, Tomsk, 634050 Russia O. V. Gimranova, National Research Tomsk Polytechnic University, pr. Lenina 30, Tomsk, 634050 Russia I. P. Chernov, National Research Tomsk Polytechnic University, pr. Lenina 30, Tomsk, 634050 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Electron tunneling through a nonstationary magnetic tunnel junction has been studied in the approximation of a small-amplitude ac electric field. The effect of a giant change in the magnetoimpedance of a magnetic tunnel junction, which occurs at some frequencies of an ac bias voltage, has been predicted. The dependence of the effect of a giant change in the magnetoimpedance on the height and thickness of the magnetic tunnel junction and on the dc bias voltage has been studied. Content Type Journal Article Pages 997-1004 DOI 10.1134/S1063783411050027 Authors D. V. Abdulkadyrov, Usikov Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine, ul. Akademika Proskury 12, Kharkov, 61085 Ukraine N. N. Beletskii, Usikov Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine, ul. Akademika Proskury 12, Kharkov, 61085 Ukraine Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    By the example of vanadium and erbium diffusion in porous silicon carbide, the semiconductor porous structure modification during thermal annealing has been simulated and the effect of this modification on impurity diffusion has been considered. A comparison of calculated and experimental profiles of the erbium and vanadium distributions in porous silicon carbide shows that the consideration of porous structure modification due to vacancy redistribution makes it possible to adequately describe diffusion in the porous semiconductor. Content Type Journal Article Pages 943-949 DOI 10.1134/S1063783411050222 Authors E. L. Pankratov, Nizhni Novgorod State University of Architecture and Civil Engineering, ul. Il’inskaya 65, Nizhni Novgorod, 603950 Russia M. G. Mynbaeva, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia E. N. Mokhov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia K. D. Mynbaev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Charge transfer has been studied in metal-dielectric-metal structures based on polycrystalline layers of lead orthoplumbate Pb 3 O 4 with a binder—cyanoethyl ester of polyvinyl alcohol, deposited on a glass substrate with a conducting ITO film. Time dependences of the current have been investigated in the temperature range T = 300–370 K and in the range of dc electric field strengths E = 2 × 10 5 −9 × 10 5 V/m. Flowing of the relaxation polarization current leads to charge accumulation in the near-electrode region. Experimental dependences agree with the relay race mechanism of charge transfer with the participation of deep local levels. Microparameters of charge transfer are determined upon varying the experimental conditions. Content Type Journal Article Pages 939-942 DOI 10.1134/S1063783411050040 Authors V. T. Avanesyan, Herzen State Pedagogical University of Russia, nab. Reki Moiki 48, St. Petersburg, 191186 Russia M. P. Sevryugina, Herzen State Pedagogical University of Russia, nab. Reki Moiki 48, St. Petersburg, 191186 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    New magnetic structures such as multilayer systems of magnetic nanoislands being alternating layers of nanoislands of various magnets have been proposed. The electric, magnetic, and magnetooptical properties of the systems have been studied. The magnetoresistance of ∼2% related to the anisotropic effect has been revealed. In multilayer structures of magnetic nanoislands, a unidirectional axis of predominant magnetization has been found, which changes its orientation depending on the structure parameters. The magnetic field required to reorient the axis in the opposite direction has been estimated to be 2 kOe 〈 H A 〈 20 kOe. The periodic multilayer structures of magnetic nanoislands are very sensitive to hyperweak magnetic fields (to 10 −6 Oe). Content Type Journal Article Pages 950-956 DOI 10.1134/S1063783411050064 Authors A. P. Boltaev, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia F. A. Pudonin, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia I. A. Sherstnev, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Activation energy of self-diffusion along symmetric tilt grain boundaries 〈111〉 in the Ni 3 Al inter-metallic compound has been calculated depending on the temperature and misorientation angle. For comparison, two types of potentials of interatomic interaction have been used: pair Morse potentials and multi-particle Cleri-Rosato potentials. It has been shown that the activation energy of grain-boundary diffusion increases with temperature on applying the additional diffusion mechanisms. Three temperature ranges with various activation energies have been found. Content Type Journal Article Pages 1043-1046 DOI 10.1134/S1063783411050131 Authors E. G. Kharina, Polzunov Altai State Technical University, pr. Lenina 46, Barnaul, 656038 Russia M. D. Starostenkov, Polzunov Altai State Technical University, pr. Lenina 46, Barnaul, 656038 Russia G. M. Poletaev, Polzunov Altai State Technical University, pr. Lenina 46, Barnaul, 656038 Russia R. Yu. Rakitin, Polzunov Altai State Technical University, pr. Lenina 46, Barnaul, 656038 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    This paper reports on a comprehensive study of the effect of additional doping with the Na acceptor impurity on the low-temperature resistivity of PbTe samples doped with Tl (2 at %), an impurity producing a band of resonant states within the valence-band spectrum. By additional doping with Na, we have shifted the Fermi level within the band of the resonant states of Tl in PbTe and varied the hole filling ( k h ) of the thallium impurity states. The larger part of the PbTe: (Tl,Na) samples transfers to the superconducting state with a critical temperature T c = 0.4–2.3 K. The T c ( k h ) relation obtained argues for the fact that, in the region of resonant states in PbTe: Tl, Anderson localization of holes and a pseudogap in the density of delocalized states are observed. Content Type Journal Article Pages 936-938 DOI 10.1134/S1063783411050210 Authors S. A. Nemov, St. Petersburg State Polytechnical University, Politechnicheskaya ul. 29, St. Petersburg, 195251 Russia Yu. I. Ravich, St. Petersburg State Polytechnical University, Politechnicheskaya ul. 29, St. Petersburg, 195251 Russia R. V. Parfen’ev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia D. V. Shamshur, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Iron film surfaces have been studied after their chemical treatment in a magnetic field. The chemical treatment of a metal leads to the appearance of a relief image that is interpreted as a “photograph” of magnetic scattering fields. The morphology of the relief image formed is shown to correlate with the domain structure of a magnetic film. The magnetochemical effect revealed allows the visualization of the dependence of the scattering field distribution at the sample surface on external magnetic field. Content Type Journal Article Pages 1013-1016 DOI 10.1134/S1063783411050039 Authors A. V. Agaponova, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia I. V. Bykov, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia S. A. Maklakov, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia S. S. Maklakov, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia A. A. Pukhov, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia I. A. Ryzhikov, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia M. V. Sedova, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia E. E. Shalygina, Moscow State University, Moscow, 119991 Russia I. T. Yakubov, Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13, Moscow, 125412 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The surface of a fresh cleavage of TiS 2 , TiSe 2 , and TiTe 2 crystals has been investigated using scanning tunneling microscopy with atomic resolution. All materials are characterized by triangular defects coinciding in shape with those supposedly formed as a result of the local change in the titanium atom coordination from octahedral to trigonal-prismatic by the chalcogen due to the Jahn-Teller effect. The conclusion has been drawn that the Jahn-Teller effect exists in these materials, but it is responsible for the formation of nanodefects rather than for the transition to a charge-density wave state. It has been shown that this interpretation of defects allows one to understand the evolution of the stability boundary of a charge-density wave upon donor and acceptor doping. Content Type Journal Article Pages 1073-1077 DOI 10.1134/S1063783411050313 Authors A. N. Titov, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. Sof’i Kovalevskoi 18, Yekaterinburg, 620990 Russia M. V. Kuznetsov, Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620990 Russia A. S. Razinkin, Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, Yekaterinburg, 620990 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The replica Monte Carlo method has been applied to study critical properties of the three-dimensional frustrated antiferromagnetic Heisenberg model on a layered triangular lattice. Magnetic and chiral critical exponents for this model have been calculated within the finite-size scaling theory. The data for this model have been analyzed for the first time taking into account corrections to scaling. It has been shown that the critical behavior of the frustrated antiferromagnetic Heisenberg model on the triangular lattice differs from the critical behavior of the pure Heisenberg model and is independent of the type of interlayer exchange interaction. Content Type Journal Article Pages 1067-1072 DOI 10.1134/S1063783411050209 Authors A. K. Murtazaev, Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. Yaragskogo 94, Makhachkala, 367003 Dagestan, Russia M. K. Ramazanov, Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. Yaragskogo 94, Makhachkala, 367003 Dagestan, Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The spatio-temporal structure of the Lüders band in artificially aged and recrystallized AMg6 alloys deformed under uniaxial tension at a constant stress rate = const has been investigated using high-speed video recording. A kinetic morphological transition has been revealed between the Euclidean and fractal shapes of the Lüders band due to a transformation of the initial microstructure of the alloy from the precipitation structure formed as a result of the artificial aging to the collective recrystallization structure. The mechanisms of formation of the dendrite-like fractal structure of the Lüders front have been discussed. Content Type Journal Article Pages 887-895 DOI 10.1134/S1063783411050271 Authors A. A. Shibkov, Derzhavin Tambov State University, ul. Internatsional’naya 33, Tambov, 392000 Russia A. E. Zolotov, Derzhavin Tambov State University, ul. Internatsional’naya 33, Tambov, 392000 Russia M. A. Zheltov, Derzhavin Tambov State University, ul. Internatsional’naya 33, Tambov, 392000 Russia A. A. Denisov, Derzhavin Tambov State University, ul. Internatsional’naya 33, Tambov, 392000 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    Carbon interaction with rhodium (111) surface has been studied by Auger electron spectroscopy in ultrahigh vacuum within a broad temperature interval of 300-1800 K. It has been shown that the graphene monolayer remains stable on the metal surface within a relatively narrow temperature interval of ∼50 K below the carbonization point, and when heated above this point, graphene breaks up gradually by transferring first to the island state, and after that, to chemisorbed carbon “gas.“ As the temperature decreases, a stable multilayer graphite film forms. Content Type Journal Article Pages 1092-1098 DOI 10.1134/S1063783411050246 Authors E. V. Rut’kov, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia A. V. Kuz’michev, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia N. R. Gall’, Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The influence of thermomagnetic prehistory on the behavior of a resistive transition R ( T ) in external magnetic fields of polycrystalline YBa 2 Cu 3 O 7 and Bi 1.8 Pb 0.3 Sr 1.9 Ca 2 Cu 3 O x high-temperature supercon-ductors and the Bi 1.8 Pb 0.3 Sr 1.9 Ca 2 Cu 3 O x + Ag texture has been investigated. It has been found that, for YBa 2 Cu 3 O 7 , the thermomagnetic prehistory exerts a substantial influence on the dissipation in the subsystem of grain boundaries in magnetic fields up to ∼10 3 Oe, and this effect becomes insignificant in fields higher than ∼10 4 Oe. This behavior has been explained by the influence of magnetic moments of high-temperature superconductor grains on the effective magnetic field in the intergranular medium. For bismuth high-temperature superconductors, no influence of thermomagnetic prehistory on the resistive transition has been observed; however, this effect manifests itself in current-voltage characteristics at high transport current densities. There is also a radical difference in the behavior of isotherms of the magnetoresistance R ( H ) for the yttrium and bismuth systems. For YBa 2 Cu 3 O 7 , there is a clear separation between the dissipation regimes in the intergranular medium and in grains, which manifests itself even at low transport current densities as a change of sign in the curvature of the dependence R ( H ). For a texture based on the bismuth high-temperature superconductor, this feature has been observed only at high current densities (comparable to the critical current density at H = 0). This difference in the behavior of magnetoresistive properties of the classical high-temperature superconductor systems under investigation has been explained by relatively low irreversibility fields of the bismuth high-temperature superconductors. In these materials, simultaneous processes of dissipation can occur in an external magnetic field both in the subsystem of grain boundaries between crystallites and in the crystallites themselves. Content Type Journal Article Pages 922-932 DOI 10.1134/S1063783411050052 Authors D. A. Balaev, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia A. A. Bykov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia S. V. Semenov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia S. I. Popkov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia A. A. Dubrovskii, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia K. A. Shaikhutdinov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia M. I. Petrov, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    The magnetic properties of an antiferromagnet with trigonal symmetry, namely, HoFe 3 (BO 3 ) 4 , have been investigated theoretically. The calculations have been performed in the molecular field approximation and in the framework of the crystal field model for the rare-earth subsystem. Extensive experimental data on the magnetic properties of HoFe 3 (BO 3 ) 4 have been interpreted and good agreement between theory and experiment has been achieved using the obtained theoretical dependences. The spontaneous spin-reorientation transition and the spin-reorientation transition induced by a magnetic field B ‖ a from the easy-axis to easy-plane state, as well as the spin-flop transition in a magnetic field B ‖ c , have been described. It has been shown that the spontaneous spin-reorientation transition is a magnetic analog of the Jahn-Teller effect. The temperature dependences of the initial magnetic susceptibility at temperatures ranging from 2 to 300 K, the nonlinear curves of magnetization for B ‖ c and B ⊥ c in a magnetic field up to 1.2 T (which indicate the occurrence of first-order phase transitions), and their evolution with variations in the temperature have been described, as well as the temperature and field dependences of the magnetization in a magnetic field up to 9 T. The parameters of the trigonal crystal field for the rare-earth ion Ho 3+ and the parameters of the Fe-Fe and Ho-Fe exchange interactions have been determined in the course of interpretation of the experimental data. Content Type Journal Article Pages 985-996 DOI 10.1134/S1063783411050088 Authors A. A. Demidov, Bryansk State Technical University, bul. Pyatidesyatiletiya Oktyabrya 7, Bryansk, 241035 Russia D. V. Volkov, Moscow State University, Moscow, 119991 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 5

Description:    A general expression for the cross section of inelastic magnetic scattering of cold polarized neutrons by superconducting rings has been derived. In this scattering process, the metastable superconducting current changes via quantum jumps corresponding to a decrease in the number of fluxoids in the superconducting ring by one or several units and the change in the energy of the ring is transferred to the kinetic energy of the scattered neutron. For rings from type-II superconductors with a thickness smaller than the field penetration depth but larger than the electron mean free path, the cross sections of inelastic scattering with neutron spin flip have been obtained for the first time. The possibility of increasing the cross section of neutron scattering by a system of rings has been discussed. Content Type Journal Article Pages 1529-1539 DOI 10.1134/S1063783411080026 Authors A. I. Agafonov, Russian Research Centre Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 8

Description:    The structures of two phases of the (NH 4 ) 2 KWO 3 F 3 crystal have been determined from X-ray diffraction data obtained for a powder sample. The profile and structural parameters have been refined according to the procedure implemented in the DDM program. The results obtained have been discussed with invoking the group-theoretical analysis of the complete order parameter condensate, which takes into account the critical and noncritical atomic orderings and allows one to interpret the experimental data. It has been found that the symmetry transformation in the crystal can be schematically represented in the form . This transformation is accompanied by the ordering of WO 3 F 3 polyhedra and the displacement of NH 4 and K ions. Content Type Journal Article Pages 1672-1679 DOI 10.1134/S1063783411080208 Authors M. S. Molokeev, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia S. V. Misyul’, Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, 660041 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 8

Description:    The results of the experimental study of the formation kinetics of metastable phases during decomposition of supersaturated solid solutions of quenched Al-Mg-Si alloys are presented. The process has been studied by measuring the electrical conductivity at low temperatures (18–85°C) and by measuring the Young’s modulus using the acoustic method in the temperature range 120–220°C. The method of measuring the Young’s modulus is characterized by a high precision and has made it possible to distinguish between the successive stages of the decomposition due to the formation of Guinier-Preston zones, particles of the pre-β″/β″ and β′-phases. The effective activation energies have been calculated using the obtained data on the characteristic durations of the stages of the process at different temperatures. It has been shown that the activation energy of the formation and evolution of particles in the β″-phase is considerably lower than the activation energy of diffusion of alloying element atoms at equilibrium conditions, which is caused by the effect of long-lived quenching vacancies. This energy is close to the activation energy of migration of the ν + Mg complex and, according to the obtained results, is equal to 0.58 eV. Content Type Journal Article Pages 1658-1663 DOI 10.1134/S1063783411080324 Authors A. A. Vasilyev, National Research University “St. Petersburg State Polytechnical University,”, Politekhnicheskaya ul. 29, St. Petersburg, 195251 Russia N. L. Kuzmin, National Research University “St. Petersburg State Polytechnical University,”, Politekhnicheskaya ul. 29, St. Petersburg, 195251 Russia A. S. Gruzdev, National Research University “St. Petersburg State Polytechnical University,”, Politekhnicheskaya ul. 29, St. Petersburg, 195251 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 8

Description:    X-ray diffraction studies of nanoporous carbon synthesized from silicon carbide have been performed. The coordination shell radii and the coordination number in nanoporous carbon have been calculated using the Finback method. It has been shown that, when the coordination shell radii coincide, the distribution of carbon atoms over the coordination shells differs from that of hexagonal graphite. Based on an analysis of the interference functions and the results of the calculation, a model of atomic arrangement in the region of short-range ordering has been constructed. It has been demonstrated that the model cluster consists of seven graphene networks with different curvature radii. Content Type Journal Article Pages 1739-1746 DOI 10.1134/S1063783411080038 Authors L. A. Aleshina, Petrozavodsk State University, pr. Lenina 33, Petrozavodsk, 185910 Russia D. V. Loginov, Petrozavodsk State University, pr. Lenina 33, Petrozavodsk, 185910 Russia A. D. Fofanov, Petrozavodsk State University, pr. Lenina 33, Petrozavodsk, 185910 Russia R. N. Kyutt, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 8

Description:    The spectra of resonant light scattering by ZnTe quantum wires have been measured at excitation energies of 2.18–2.72 eV. The quantum wires have been grown on Si(100) and GaAs(100) substrates by molecular beam epitaxy. The effect of outgoing resonance with the electron transition energy E 0 on the intensity of phonon lines of the Stokes spectrum and on the intensity ratio of the Stokes and anti-Stokes spectral lines has been studied. The energy E 0 has been determined in ZnTe and ZnMgTe quantum wires from the edge luminescence spectra. Content Type Journal Article Pages 1722-1726 DOI 10.1134/S106378341108018X Authors N. N. Mel’nik, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia T. N. Zavaritskaya, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia I. V. Kucherenko, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia T. Wojtowicz, Institute of Physics, Polish Academy of Sciences, al. Lotnikow 32/46, Warsaw, 02-668 Poland E. Janik, Institute of Physics, Polish Academy of Sciences, al. Lotnikow 32/46, Warsaw, 02-668 Poland O. S. Plyashechnik, Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 53 Journal Issue Volume 53, Number 8