ALBERT

Description:    In this work, the effect of SnO 2 nano-particles (40 nm) addition to the physical properties of Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 10+ δ superconducting phase was studied. (Bi, Pb)-2223 superconductor phase added by SnO 2 nano-particles was prepared by a conventional solid-state reaction technique. The SnO 2 nano-particles concentrations x varied from 0.0 to 2.0 wt% of the sample’s total mass. The prepared samples were investigated by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and electron dispersive spectroscopy (EDS) for analyzing phase formation and microstructure. Also, the electrical resistivity and transport critical current density, for investigated samples, were measured by standard dc four-probe method. Phase examination by XRD indicated that SnO 2 nano-particles enhanced the (Bi, Pb)-2223 phase formation up to x =0.4 wt%. On the other hand, the high concentrations of SnO 2 nano-particles retarded the phase formation. Granular investigation, from scanning electron microscope, showed that both number and size of voids decreased as x increased from 0.0 to 0.4 wt%. The superconducting transition temperature and transport critical current density were found to have optimal values at x =0.4 wt%. The enhancement rates in T c and J c were 12 and 58%, respectively, which had a maximum enhancement in both J c and T c for all investigated nano-particles. Content Type Journal Article Pages 1-8 DOI 10.1007/s10948-011-1171-z Authors A. I. Abou-Aly, Phycics Department, Faculty of Science, Alexandria University, Alexandria, 21511 Egypt M. M. H. Abdel Gawad, Physics Department, Faculty of Education, Alexandria University, Alexandria, Egypt R. Awad, Phycics Department, Faculty of Science, Alexandria University, Alexandria, 21511 Egypt I. G-Eldeen, Physics Department, Faculty of Education, Alexandria University, Alexandria, Egypt Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    It is studied within the scaling analysis the fluctuation conductivity under the magnetic fields in ReFeAsO (Re=Nd, Pr) superconductors reported in literatures. A crossover is firstly observed in these iron-based superconductors from the Lowest Landau level (LLL) regime above the magnetic field H LLL ∼6–7 T to the critical fluctuation region at the low field. The static exponent ν of ReFeAsO superconductors is estimated to be 1.85±0.05, which is close to that of Bi 2 Sr 2 CaCu 2 O 8 , and the dynamic exponent z of ReFeAsO superconductors deviates from the theoretical prediction but is similar to that extracted from the resistivity experiment using the crossing-point technique. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1155-z Authors S. L. Liu, College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210003 P.R. China Yongtao Li, College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210003 P.R. China Gang Bao, College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210003 P.R. China Haiyun Wang, College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210003 P.R. China Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    The phenomenological Green’s function developed in the works of Yang, Rice, and Zhang has been very successful in understanding many of the anomalous superconducting properties of the deeply underdoped cuprates. It is based on considerations of the resonating valence bond spin liquid approximation and is designed to describe the underdoped regime of the cuprates. Here, we emphasize the region of doping, x , just below the quantum critical point at which the pseudogap develops. In addition to Luttinger hole pockets centered around the nodal direction, there are electron pockets near the antinodes which are connected to the hole pockets by gapped bridging contours. We determine the contours of nearest approach as would be measured in angular resolved photoemission experiments and emphasize signatures of the Fermi surface reconstruction from the large Fermi contour of Fermi liquid theory (which contains 1+ x hole states) to the Luttinger pocket (which contains x hole states). We find that the quasiparticle effective mass renormalization increases strongly toward the edge of the Luttinger pockets beyond which it diverges. Content Type Journal Article Pages 1-11 DOI 10.1007/s10948-011-1169-6 Authors J. P. F. LeBlanc, Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada J. P. Carbotte, Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4L8, Canada Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    We studied the possible superconducting state in an electronic itinerant ferromagnetic system characterized by a density of states that presents a moderately strong peak that is controlled by a specific parameter a and is positioned near the band edge. Specifically, we investigated the superconducting critical temperature, T c , and the zero-temperature superconducting gap, Δ 0 . The analysis is done in a self-consistent way, the BCS mean-field equation being solved together with the electron density equation to trace possible changes in the system’s chemical potential due to the strong correlations between the component electrons. We discussed the density dependence of the superconducting critical temperature and zero-temperature superconducting gap for various values of the control parameter a and of the electron–electron attractive interaction. In the zero temperature limit we derive the system’s phase diagram and discuss the possible fermionic and bosonic regimes of the diagram as function of the strength of the attractive interaction. Content Type Journal Article Pages 1-8 DOI 10.1007/s10948-011-1175-8 Authors A. A. Díaz, Departamento de Física—FACYT, University of Carabobo, Valencia, Venezuela J. J. Rodríguez-Núñez, Lab. SUPERCOMP, Departamento de Física—FACYT, University of Carabobo, Valencia, Venezuela A. A. Schmidt, LANA, Departamento de Matemática, CCNE, UFSM, Santa Maria, Brazil I. Ţifrea, Department of Physics and Astronomy, California State University Fullerton, Fullerton, CA 92834, USA Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    We synthesized as prepared and oxygen annealed Cu 0.5 Tl 0.5 Ba 2 Ca 3− y M y Cu 4 O 12− δ ( y =0 and 1.5 for M=Mg, Be) High Temperature Superconductors (HTSCs) by using the solid state reaction method. It is observed that superconducting properties and the magnitude of the diamagnetism are enhanced by the doping of Mg and Be at the Ca site; this is due to smaller ionic sizes and higher electronegativities of Mg and Be as compared to Ca. Furthermore, interplanar coupling is also improved and shrinking of the axis length is the direct evidence of it. The carrier’s concentration in conducting planes is improved by carrying out post-annealing experiments in the oxygen atmosphere. Moreover, FTIR absorption measurements are also incorporated. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1156-y Authors Babar Shabbir, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320 Islamabad, Pakistan Muhammad Imran Malik, BS Department, SEECS, NUST, Sector H-12, Islamabad, Pakistan Nawazish A Khan, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320 Islamabad, Pakistan Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    The relatively higher electronegative elements (M = Pd, Nb, Bi, Hg) have been partially doped at Tl sites in Cu 0.5 Tl 0.5− x M x Ba 2 O 4− δ ( x =0,0.25) charge reservoir layer of Cu 0.5 Tl 0.5− x M x Ba 2 Ca 2 Cu 3 O 10− δ superconductor. These elements may retain more oxygen in the charge reservoir layer due to their higher electronegativity as compared to Tl, and the higher population of oxygen in the charge reservoir layer can optimize the charge carriers’ density in the conducting CuO 2 planes. The optimum density of mobile charge carriers in the conducting CuO 2 increases Fermi wave-vector K F and Fermi velocity v F of the carriers, which results in the improvement of superconducting properties of the material. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1157-x Authors M. Mumtaz, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan Nawazish A. Khan, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan Faheem Ashraf, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    We report a simple, reliable method to grow high-quality BaFe 2− x Co x As 2 single-crystal samples without using any fluxing agent. The starting materials for the single-crystal growth come from well-crystallized polycrystalline samples and the highest growing temperature can be 1230°C. The as-grown crystals have typical dimensions of 4×3×0.5 mm 3 with c -axis perpendicular to the shining surface. We find that the samples have very large current carrying ability, indicating that the samples have good potential technological applications. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1163-z Authors Changjin Zhang, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031 People’s Republic of China Lei Zhang, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031 People’s Republic of China Chuanying Xi, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031 People’s Republic of China Langsheng Ling, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031 People’s Republic of China Wei Tong, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031 People’s Republic of China Shun Tan, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026 People’s Republic of China Yuheng Zhang, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031 People’s Republic of China Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Cu 0.5 Tl 0.5 Ba 2 Ca 2− x Pr x Cu 3 O 10− δ superconducting samples, with 0≤ x ≤0.15, were prepared by a single-step solid state reaction on a form of rectangular bar. The prepared samples were characterized using X-ray powder diffraction (XRD) and scanning electron microscope (SEM). The room temperature Vickers microhardness was measured at different loads (0.25–3 N). The experimental results were analyzed using Meyer’s law, Hays–Kendall approach, elastic/plastic deformation model, proportional specimen resistance model, and the indentation-induced cracking (IIC) model. Surprising results were obtained and showed that all samples in the form of rectangular bars exhibited reverse indentation size effect in contrary with those in the form of discs. Vickers microhardness values were decreased as Pr-content increased that consisting with the porosity results. Furthermore, the Young’s modulus was determined using the dynamic resonance technique. A relation between Young’s modulus ( E ) and Vickers microhardness ( H V ) was obtained. Content Type Journal Article Pages 1-10 DOI 10.1007/s10948-011-1150-4 Authors R. Awad, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt A. I. Abou Aly, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt M. Kamal, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt M. Anas, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    The main role played by mobile carriers and fluctuation induced conductivity (FIC) in (Cu 0.5 Tl 0.5− x K x )Ba 2 Ca 3 Cu 1 Zn 3 O 12− δ ( x =0, 0.25) superconductor samples are analyzed in the light of the Aslamazov–Larken (AL) theory. The enhancement of three-dimensional (3D) conductivity and grain size is achieved with K-doping at Tl sites in the (Cu 0.5 Tl 0.5− x K x )Ba 2 O 4− δ charge reservoir layer, which are further improved by post-annealing the samples in oxygen. The improvement of these factors causes the increase in cross-over temperature ( T o ), zero resistivity critical temperature { T c ( R =0)} and T c (onset) of diamagnetism to their higher values. We have also evaluated the exponents ( λ 2D and λ 3D ), zero temperature coherence lengths ξ c (0), and interlayer coupling ( J ) for these samples and tried to correlate them to the superconductivity order parameters. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1148-y Authors M. Mumtaz, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan Nawazish A. Khan, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan S. M. Hasnain, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan Adnan Younis, Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320 Pakistan Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    We report on Gd ion implantation and magnetic characterization of GaN films on sapphire substrates and of bare sapphire and Si substrates to shed light on the mechanism underlying the induced magnetism upon Gd ion implantation. For all three hosts, giant magnetic moments per Gd ion were observed at temperatures of 5 through 300 K. The maximum moment per Gd in GaN was 1800 μ B , while the moments in Gd-implanted Si and sapphire were only slightly smaller. The apparent induced ferromagnetic response was found to be metastable, disappearing after on the order of 50 days at room temperature, except for the implanted sapphire. We argue that our findings support a defect-based picture of magnetism in Gd-implanted semiconductors and insulators. Content Type Journal Article Pages 1-6 DOI 10.1007/s10948-011-1165-x Authors X. Wang, Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, USA C. Timm, Institute of Theoretical Physics, Technische Universtät Dresden, 01062 Dresden, Germany X. M. Wang, Department of Physics, University of Houston, Houston, USA W. K. Chu, Department of Physics, University of Houston, Houston, USA J. Y. Lin, Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, USA H. X. Jiang, Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, USA J. Z. Wu, Department of Physics and Astronomy, University of Kansas, Lawrence, USA Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    In the present study, we report an intercomparison of various physical and electronic properties of MgB 2 and AlB 2 . In particular, the results of phase formation, resistivity ρ ( T ), thermoelectric power S ( T ), magnetization M ( T ), heat capacity ( C P ), and electronic band structure are reported. The original stretched hexagonal lattice with a =3.083 Å, and c =3.524 Å of MgB 2 shrinks in c -direction for AlB 2 with a =3.006 Å, and c =3.254 Å. The resistivity ρ ( T ), thermoelectric power S ( T ) and magnetization M ( T ) measurements exhibited superconductivity at 39 K for MgB 2 . Superconductivity is not observed for AlB 2 . Interestingly, the sign of S ( T ) is +ve for MgB 2 the same is −ve for AlB 2 . This is consistent with our band structure plots. We fitted the experimental specific heat of MgB 2 to Debye–Einstein model and estimated the value of Debye temperature ( Θ D ) and Sommerfeld constant ( γ ) for electronic specific heat. Further, from γ , the electronic density of states ( DOS ) at Fermi level N ( E F ) is calculated. From the ratio of experimental N ( E F ) and the one being calculated from DFT , we obtained value of λ to be 1.84, thus placing MgB 2 in the strong coupling BCS category. The electronic specific heat of MgB 2 is also fitted below T c using α -model and found that it is a two gap superconductor. The calculated values of two gaps are in good agreement with earlier reports. Our results clearly demonstrate that the superconductivity of MgB 2 is due to very large phonon contribution from its stretched lattice. The same two effects are obviously missing in AlB 2 , and hence it is not superconducting. DFT calculations demonstrated that for MgB 2 , the majority of states come from σ and π 2p states of boron on the other hand σ band at Fermi level for AlB 2 is absent. This leads to a weak electron phonon coupling and also to hole deficiency as π bands are known to be of electron type, and hence obviously the AlB 2 is not superconducting. The DFT calculations are consistent with the measured physical properties of the studied borides, i.e., MgB 2 and AlB 2 . Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1146-0 Authors Devina Sharma, Quantum Phenomena and Applications Division, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India Jagdish Kumar, Quantum Phenomena and Applications Division, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India Arpita Vajpayee, Quantum Phenomena and Applications Division, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India Ranjan Kumar, Department of Physics, Punjab University, Chandigrah, 160014 India P. K. Ahluwalia, Department of Physics, Himachal Pradesh University, Summerhill, Shimla, 171005 India V. P. S. Awana, Quantum Phenomena and Applications Division, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Selenium-containing nanosystems based on nonionic polymers (polyvinylpyrrolidone, oxyethyl cellulose), a cationic polyelectrolyte (poly- N,N,N,N -trimethylmethacryloyloxyethylammonium methyl sulfate), and anionic polyelectrolytes (poly-2-acrylamido-2-methylpropanesulfonic and polymethacrylic acids) were studied. Content Type Journal Article Pages 661-665 DOI 10.1134/S1070427211040173 Authors S. V. Valueva, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia L. N. Borovikova, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia N. A. Matveeva, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Structure of the crystalline component of a polyacrylonitrile fiber was studied in isothermal thermomechanical treatment by comparing X-ray diffraction data at various temperatures and mechanical loads of thermal stabilization. Content Type Journal Article Pages 701-707 DOI 10.1134/S1070427211040252 Authors A. G. Fazlitdinova, State Educational Enterprise for Higher Professional Education, Chelyabinsk State University, Chelyabinsk, Russia V. A. Tyumentsev, State Educational Enterprise for Higher Professional Education, Chelyabinsk State University, Chelyabinsk, Russia E. P. Mayanov, State Educational Enterprise for Higher Professional Education, Chelyabinsk State University, Chelyabinsk, Russia S. A. Podkopaev, State Educational Enterprise for Higher Professional Education, Chelyabinsk State University, Chelyabinsk, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Equation relating the physicochemical properties of a material being ground to technological parameters of the process is derived. The equation makes it possible to evaluate the energy expenditure for grinding. Content Type Journal Article Pages 628-631 DOI 10.1134/S1070427211040124 Authors O. S. Ivanov, Institute for Problems of Chemical-Energetic Technologies, Siberian Branch, Russian Academy of Sciences, Biisk, Altai krai, Russia M. S. Vasilishin, Institute for Problems of Chemical-Energetic Technologies, Siberian Branch, Russian Academy of Sciences, Biisk, Altai krai, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Catalytic activity exhibited by a mixed-valent film of ruthenium oxideruthenium cyanide deposited on the surface of a glassy-carbon electrode in electrooxidation of paracetamol and acetylsalicylic acid was used to develop a high-sensitivity selective method for determination of these compounds in the case of their joint presence under flow-injection conditions. Content Type Journal Article Pages 620-627 DOI 10.1134/S1070427211040112 Authors L. G. Shaidarova, Kazan State University, Kazan, Tatarstan, Russia A. V. Gedmina, Kazan State University, Kazan, Tatarstan, Russia I. A. Chelnokova, Kazan State University, Kazan, Tatarstan, Russia G. K. Budnikov, Kazan State University, Kazan, Tatarstan, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Possibility of synthesis of 1-adamantyl phenyl ethers by one stage without use of a catalyst was researched. Content Type Journal Article Pages 730-731 DOI 10.1134/S1070427211040318 Authors G. M. Butov, Volzhskii Polytechnic Institute of Volgograd State Technical University, Volzhskii, Volgogradckaya oblast, Russia E. A. Kamneva, Volzhskii Polytechnic Institute of Volgograd State Technical University, Volzhskii, Volgogradckaya oblast, Russia K. R. Saad, Volzhskii Polytechnic Institute of Volgograd State Technical University, Volzhskii, Volgogradckaya oblast, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The possibility to synthesize polyamidines in melt from dinitriles and diamines in the presence of aluminum chloride was explored. Content Type Journal Article Pages 510-511 DOI 10.1134/S1070427211030311 Authors B. Ch. Kholkhoev, Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Buryat Republic, Russia V. F. Burdukovskii, Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Buryat Republic, Russia D. M. Mognonov, Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Buryat Republic, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Results of numerical modeling of the kinetics of reaction of binding of nitrogen at mechanochemical disintegration of water solutions are illustrated. Experimental data of kinetics of more than fifty reactions which in many cases are different from Arrhenius kinetics were used in calculations. It is found that the main channel of nitrogen fixation is the formation of nitrocompounds, but in the presence of small amount of hydrogen the change to the channel of ammonia formation becomes possible. Content Type Journal Article Pages 559-564 DOI 10.1134/S1070427211030396 Authors Z. S. Salimov, Institute of General and Inorganic Chemistry, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan U. S. Baltaev, Institute of General and Inorganic Chemistry, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan A. M. Khurmamatov, Institute of General and Inorganic Chemistry, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan N. Kh. Yuldashev, Institute of General and Inorganic Chemistry, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan O. R. Obdurakhmonov, Institute of General and Inorganic Chemistry, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    X-ray diffraction and differential-thermal analyses were used to study the phase relations in the subsolidus region of the system Li 2 MoO 4 -BaMoO 4 -R 2 (MoO 4 ) 3 . The temperature dependence of the conductivity of Li 3 Ba 2 R 3 (MoO 4 ) 8 phases (R = Y, Eu, Sm, La) was examined. Content Type Journal Article Pages 384-387 DOI 10.1134/S1070427211030086 Authors N. M. Kozhevnikova, Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Buryatia, Russia O. A. Kopylova, Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Buryatia, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Effect of hydrodynamic conditions on the electrodeposition of copper from water-isopropyl alcohol solutions of CuSO 4 was studied. The experimental data obtained were analyzed in terms of the diffusion kinetics equation for a rotating disk electrode. Electron microscopy and X-ray diffraction analysis were used to examine the chemical and granulometric composition of copper-containing electrolytic powders. Content Type Journal Article Pages 615-619 DOI 10.1134/S1070427211040100 Authors A. V. Noskov, Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia S. A. Chulovskaya, Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia A. V. Balmasov, Ivanovo State University of Chemical Engineering, Ivanovo, Russia V. I. Parfenyuk, Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Initiated oxidation of cumene by oxygen in the presence of ascorbic acid was studied. Content Type Journal Article Pages 427-430 DOI 10.1134/S1070427211030165 Authors O. V. Smirnova, Litvinenko Institute of Physicoorganic Chemistry, National Academy of Sciences of Ukraine, Donetsk, Ukraine I. V. Efimova, Litvinenko Institute of Physicoorganic Chemistry, National Academy of Sciences of Ukraine, Donetsk, Ukraine I. A. Opeida, Litvinenko Institute of Physicoorganic Chemistry, National Academy of Sciences of Ukraine, Donetsk, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Method for evaluation of the efficiency of photoresist adhesion promoters is suggested. The method is based on a thermodynamic simulation of the reactivity of organosilicon compounds with respect to hydroxycontaining derivatives. The adequacy of the chosen technique was verified experimentally. Content Type Journal Article Pages 431-436 DOI 10.1134/S1070427211030177 Authors V. A. Titov, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia V. I. Rakhlin, Favorskii Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia E. E. Grinberg, State Research Institute of Chemical Reagents and Special-Purity Chemical Substances, Federal State Unitary Enterprise, Moscow, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    An efficient procedure was developed for preparation of ( E )- and ( Z )-3-chloroprop-2-ne-1-ylamines from commercially available 1,3-dichloropropene. Content Type Journal Article Pages 504-506 DOI 10.1134/S1070427211030293 Authors A. U. Takhautdinova, Ufa State Petroleum Technological University, Ufa, Bashkortostan, Russia E. R. Mindiyarova, Ufa State Petroleum Technological University, Ufa, Bashkortostan, Russia R. N. Shakhmaev, Ufa State Petroleum Technological University, Ufa, Bashkortostan, Russia V. V. Zorin, Ufa State Petroleum Technological University, Ufa, Bashkortostan, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Cooling of polymer granules and strands in air and water was examined. The greatest effect of a turbulence of air flow on the cooling rate of granules was revealed in the starting period. An analysis of the cooling of granules in water demonstrated that the rate of heat transfer from a volume of thermoplastic material to its surface was a rate-limiting step and, thus, an effect of turbulization of a water flow on the cooling was negligible. We showed that it would be appropriate to install partitions destroying a heated boundary layer of water for intensifying process in a cooling bath since an actual cooling of the strands in the water bath longer corresponds to the case when water moves together with strand. Content Type Journal Article Pages 550-558 DOI 10.1134/S1070427211030384 Authors I. O. Mikulionok, Ukrainian Technical University “Kyiv Polytechnical Institute”, Kiev, Ukraine L. B. Rodchenko, Ukrainian Technical University “Kyiv Polytechnical Institute”, Kiev, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Results of experiments on evaluation of velocity fields in the apparatus of diameter 98 mm loaded with irregular ring nozzle of different type so that the ratio of the diameter of the apparatus to the diameter of the packing D/d = 10 are analyzed in the article. The significant influence of the walls limiting the layer of packing on the uniformity of distribution of the velocity field in the cross-section of the apparatus with packing is shown. Raschig rings, rings of MS type and rings of N1 type of dimensions 10 × 10 × 0.9 mm made of metal were used as packing. The data obtained on Raschig rings were compared with published data. Content Type Journal Article Pages 533-538 DOI 10.1134/S1070427211030359 Authors A. S. Pushnov, Moscow State University of Environmental Engineering, Moscow, Russia E. N. Petrashova, Moscow State University of Environmental Engineering, Moscow, Russia M. G. Lagutkin, Moscow State University of Environmental Engineering, Moscow, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Ion exchange properties of carbon fibers obtained by heat treatment in a temperature range of 200–600°C in an inert atmosphere of cellulose-regenerated impregnated by 0.3–3.0 M ammonium chloride were examined. Content Type Journal Article Pages 368-371 DOI 10.1134/S1070427211030050 Authors N. K. Luneva, Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus M. Z. Gavrilov, Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    An effect of ammonium hydrofluoride treatment of silica-containing raw material was examined. We described thermodynamics and kinetics of caking raw materials and their crushed materials, ammonium hexafluorosilicate sublimation, and amorphous silica formation. Constants of rate and activation energy of the chemical reactions were calculated. Content Type Journal Article Pages 345-350 DOI 10.1134/S1070427211030013 Authors V. S. Rimkevich, Institute of Geology and Nature Management, Far Eastern Branch, Russian Academy of Sciences, Blagoveshchensk, Amur oblast, Russia A. A. Pushkin, Institute of Geology and Nature Management, Far Eastern Branch, Russian Academy of Sciences, Blagoveshchensk, Amur oblast, Russia Yu. N. Malovitskii, Institute of Geology and Nature Management, Far Eastern Branch, Russian Academy of Sciences, Blagoveshchensk, Amur oblast, Russia I. V. Girenko, Institute of Geology and Nature Management, Far Eastern Branch, Russian Academy of Sciences, Blagoveshchensk, Amur oblast, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Results of numerical modeling of the kinetics of reaction of binding of nitrogen at mechanochemical disintegration of water solutions are illustrated. Experimental data of kinetics of more than fifty reactions which in many cases are different from Arrhenius kinetics were used in calculations. It is found that the main channel of nitrogen fixation is the formation of nitrocompounds, but in the presence of small amount of hydrogen the change to the channel of ammonia formation becomes possible. Content Type Journal Article Pages 542-549 DOI 10.1134/S1070427211030372 Authors V. B. Oshurko, Association “Technologies and Materials of Nuclear Science and Engineering,”, Moscow, Russia K. G. Poltevskii, Association “Technologies and Materials of Nuclear Science and Engineering,”, Moscow, Russia P. P. Poluetkov, Association “Technologies and Materials of Nuclear Science and Engineering,”, Moscow, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Deep hydrogenation of products of cyclohexane condensation, dianons: 2-cyclohexylidene cyclohexanone and 2-cyclohexylene cyclohexanone, containing in waste of caprolactam manufacture, to saturated alcohol, 2-cyclohexyl cyclohexanol that can be used in synthesis of ester plasticizers for polymer compositions. Content Type Journal Article Pages 655-660 DOI 10.1134/S1070427211040161 Authors V. A. Pozdeev, Samara State Technical University, Samara, Russia S. V. Levanova, Samara State Technical University, Samara, Russia E. L. Krasnykh, Samara State Technical University, Samara, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Mutual solubility was studied for the components of pseudoquaternary system water-isopropanolkerosene-ethyl silicate-40, and the compositions of the system in the critical solubility points were determined. Content Type Journal Article Pages 582-587 DOI 10.1134/S1070427211040045 Authors S. A. Demakhin, Ekokhim Research and Production Enterprise, Limited Liability Company, Saratov, Russia K. K. Il’in, Chernyshevskii Saratov State University, Saratov, Russia A. G. Demakhin, Ekokhim Research and Production Enterprise, Limited Liability Company, Saratov, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Initiated oxidation of tridecane in chlorobenzene solution with molecular oxygen in the presence of a series of phenol derivatives was studied by chemiluminescence and gas-volumetric methods. The kinetic parameters of the antiradical and antioxidant activity of the compounds were determined. Content Type Journal Article Pages 649-654 DOI 10.1134/S107042721104015X Authors A. N. Nikolaevskii, Donetsk National University, Donetsk, Ukraine V. V. Morenko, Donetsk National University, Donetsk, Ukraine O. P. Kniga, Donetsk National University, Donetsk, Ukraine T. N. Ivleva, Donetsk National University, Donetsk, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Isotherm of ion exchange of Co 2+ and Na + cations on iron-manganese concretions is thermodynamically described using a modified Langmuir equation. The thermodynamic characteristics of the ion exchange are determined. Content Type Journal Article Pages 588-591 DOI 10.1134/S1070427211040057 Authors D. E. Chirkst, St. Petersburg State Mining Institute, St. Petersburg, Russia O. V. Cheremisina, St. Petersburg State Mining Institute, St. Petersburg, Russia M. V. Ivanov, St. Petersburg State Mining Institute, St. Petersburg, Russia I. I. Ivanov, St. Petersburg State Mining Institute, St. Petersburg, Russia I. T. Zhadovskii, St. Petersburg State Mining Institute, St. Petersburg, Russia A. A. Chistyakov, St. Petersburg State Mining Institute, St. Petersburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The optimum conditions for the formation of amorphous silicon dioxide from wastes formed in ferroalloy production containing more than 99% of the main substance were determined and its physicochemical properties were studied. Content Type Journal Article Pages 565-571 DOI 10.1134/S107042721104001X Authors L. A. Zemnukhova, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia G. A. Fedorishcheva, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia E. D. Shkorina, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia T. A. Kaydalova, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia N. N. Barinov, Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Sorption of methyl acetate, ethyl acetate, propyl acetate, butyl acetate, and diethyl ether on thin films of esters: poly(ethylene glycol) sebacate and phthalate, dinonyl phthalate, tween-40, pentaerythritol tetrabenzoate, triphenyl phosphate, Triton X-305, and stearic acid was studied. The mass of sorbent films was optimized, the sensitivity and selectivity of modifiers toward analytes was evaluated, and the time of maximum sorption was determined. Content Type Journal Article Pages 592-596 DOI 10.1134/S1070427211040069 Authors S. I. Niftaliev, Voronezh State Technological Academy, Voronezh, Russia S. E. Plotnikova, Voronezh State Technological Academy, Voronezh, Russia N. Ya. Mokshina, Voronezh Institute of Air Force Engineering, Voronezh, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Electrolytic composites of iron sulfides FeS and Fe 3 S 4 with natural graphites of GAK and EUZ-3 brands and Chinese graphite were synthesized in thin layers and studied in a prototype lithium battery. Content Type Journal Article Pages 607-614 DOI 10.1134/S1070427211040094 Authors R. D. Apostolova, Ukrainian State University of Chemical Engineering, Dnepropetrovsk, Ukraine O. V. Kolomoets, Ukrainian State University of Chemical Engineering, Dnepropetrovsk, Ukraine M. E. Shembel, Ukrainian State University of Chemical Engineering, Dnepropetrovsk, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Lightfast of red xanthene and blue azine and triphenylmethane dyes in mixtures with azo dyes of 1-phenyl-3-methyl-5-pyrazolone in the polymer films from cellulose acetobutirate were studied. Content Type Journal Article Pages 670-675 DOI 10.1134/S1070427211040197 Authors N. B. Sokolova, St. Petersburg State Technological Institute, St. Petersburg, Russia I. V. Lisina, St. Petersburg State Technological Institute, St. Petersburg, Russia N. A. Tamoshauskas, St. Petersburg State Technological Institute, St. Petersburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The possibility to prepare pH-sensitive hydrogels based on polyhexamethyleneguanidine hydrochloride was explored. The equilibrium swelling rate of the hydrogels obtained at different monomer ratios was examined in relation to pH of the medium. Content Type Journal Article Pages 724-726 DOI 10.1134/S107042721104029X Authors M. N. Grigor’eva, Baikal Institute of Nature Management, Siberian Division, Russian Academy of Sciences, Buryat Republic, Ulan-Ude, Russia S. A. Stel’makh, Baikal Institute of Nature Management, Siberian Division, Russian Academy of Sciences, Buryat Republic, Ulan-Ude, Russia L. U. Bazaron, Baikal Institute of Nature Management, Siberian Division, Russian Academy of Sciences, Buryat Republic, Ulan-Ude, Russia D. M. Mognonov, Baikal Institute of Nature Management, Siberian Division, Russian Academy of Sciences, Buryat Republic, Ulan-Ude, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    In this work, we report a systematic study on the microstructure and magnetic properties of isotropic M-type SrNd x Fe 12− x O 19 hexaferrites ( x =0.0, 0.1, 0.2, 0.3, 0.4, 0.5) obtained by conventional ceramic process. According to DRX analysis, a solid solution is formed for Nd contents up to x =0.1, while a composite Sr(NdFe) 12 O 19 /SrFeO 3 microstructure results for x 〉0.1. Interesting combinations of hard magnetic properties were obtained for the whole compositional series including increasing coercivity values (up to 329 kA/m for x =0.5) with increasing Nd concentration, together with high Curie temperatures (around 731 K). Results are interpreted in terms of the Nd incorporation into the unit cell as well as within the frame of the nucleation controlled mechanism as the coercivity source for this kind of materials. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1193-6 Authors T. J. Pérez-Juache, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Av. Salvador Nava Martínez S/N Zona Universitaria, San Luis Potosí, SLP CP 78294, Mexico I. Betancourt, Departamento de Materiales Metálicos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, México D.F., 04510 México S. A. Palomares-Sánchez, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Av. Salvador Nava Martínez S/N Zona Universitaria, San Luis Potosí, SLP CP 78294, Mexico M. Mirabal García, Instituto de Física, Universidad Autónoma de San Luis Potosí, Av. Dr. Nava S/N, Zona Universitaria, 78290 San Luis Potosí, SLP, México J. A. Matutes-Aquino, Centro de Investigación en Materiales Avanzados, Chihuahua, Chih., México A. L. Guerrero-Serrano, Centro de Investigación en Materiales Avanzados, Chihuahua, Chih., México Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Magnetosensitive composites were prepared on the basis of biocompatible polymers using Elmore reaction. The structure of the composites and the morphology of the metal-containing component were examined. The magnetic characteristics of the materials were studied. Content Type Journal Article Pages 847-853 DOI 10.1134/S1070427211050181 Authors Yu. N. Bol’bukh, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine V. A. Tertykh, Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine G. Yu. Yurkov, Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia E. A. Ovchenkov, Lomonosov Moscow State University, Moscow, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    A thermotropic mesogenic alkylene-aromatic poly(ether ester) was prepared by phase-transfer polycondensation of the azomethine derived from 5-amino-2-phenylbenzoxazole and 3,4-dihydroxybenzaldehyde with 1,6-bis(4-chlorocarbonylphenoxy)hexane in the presence of a phase-transfer catalyst, trimethylhexadecylammonium bromide. The intramolecular orientation order parameters and the angle formed by the pendant 5-imino-2-phenylbenzoxazole substituent relative to the backbone were estimated by methods of molecular hydrodynamics and optics. Content Type Journal Article Pages 832-839 DOI 10.1134/S1070427211050168 Authors S. V. Bushin, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia L. N. Andreeva, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia I. A. Strelina, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia L. I. Rudaya, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia A. V. Chernienko, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia S. M. Ramsh, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia V. V. Shamanin, Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    Effect of the composition of copolymers of methyl methacrylate with methacrylic acid and methacrylamide on their heat resistance and thermooxidative stability was studied. Content Type Journal Article Pages 859-866 DOI 10.1134/S107042721105020X Authors L. P. Krul’, Belarussian State University, Minsk, Belarus L. B. Yakimtsova, Belarussian State University, Minsk, Belarus E. L. Egorova, Research Institute for Physicochemical Problems, Belarussian State University, Minsk, Belarus Yu. I. Matusevich, Research Institute for Physicochemical Problems, Belarussian State University, Minsk, Belarus A. P. Polikarpov, Institute of Physicoorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    The effect of nitrogen addition on the morphology, magnetic anisotropy, and magnetoresistance properties of Co–Ni–N granular thin films were investigated. The films were grown by electrodeposition onto aluminum substrates at room temperature. By a complex process of cationic catalysis occurring at the cathode/electrolyte interface, nitrogen is adsorbed in the Co–Ni film. Finally, a granular film grows by a tridimensional progressive nucleation mechanism. The nature of the grains and of the interface between them influences exchange interactions between grains, which play an important role in determining the magnetic anisotropy. From the magnetic measurements, we found that the magnetic anisotropy constant varied in the range K eff =(−21.5÷36.6)×10 4  J⋅m −3 and the coercivity varied between H c =(13÷67) kA⋅m −1 depending on the sodium nitrate content in the plating bath. The Co–Ni–N granular thin films display large values (∼160%) of magnetoresistance. These large values of magnetoresistance make such structures attractive for applications as sensitive magnetic field sensors. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1188-3 Authors S. I. Tanase, Faculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 700506 Romania D. Pinzaru (Tanase), Faculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 700506 Romania V. Georgescu, Faculty of Physics, “Alexandru Ioan Cuza” University, Iasi, 700506 Romania Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Na-doped single domain YBa 2− x Na x Cu 3 O 7− δ (YBCO, x =0.05, 0.1, 0.15, 0.2, 0.25, 0.3) bulk superconductors were prepared by a modified melt textured process and the effect of Na substitution on the levitation force of YBCO bulks have been investigated. The maximum levitation forces (MLF) are much different for samples with a different Na element content. It is found that the optimum Na element content in YBCO for the strong MLF is around x =0.2. It is also found that the addition of Na could reduce and increase the ATH of the YBCO platelet while x less than 0.1 and larger than 0.1, some of adjacent platelet grains are well intergrown each other in the sample with x =0.2 comparing to the other samples and the influence of the Na addition on the Y211 particle size is not obvious. Content Type Journal Article Pages 1-4 DOI 10.1007/s10948-011-1183-8 Authors W. M. Yang, Department of Physics, Shaanxi Normal University, Xi’an, Shaanxi 710062, China Y. L. Tang, Department of Physics, Shaanxi Normal University, Xi’an, Shaanxi 710062, China G. Z. Li, Department of Physics, Shaanxi Normal University, Xi’an, Shaanxi 710062, China X. X. Chao, Department of Physics, Shaanxi Normal University, Xi’an, Shaanxi 710062, China J. Ma, Department of Physics, Shaanxi Normal University, Xi’an, Shaanxi 710062, China Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    An analysis of the properties of a family based on lead-barium substitution in the M-type hexaferrite is presented. The samples were prepared by the ceramic method according to the general formula Pb x Ba 1− x Fe 12 O 19 . The barium content was varied with x =0.1, 0.3, 0.5, 0.7, and 0.9; no secondary phases were detected in any composition. Rietveld refinement analysis was done in order to determinate crystallographic parameters, content of phases and degree of substitution. The effects of the barium on the morphological and magnetic properties were studied. Iron Mössbauer spectroscopy was used for determining the hyperfine parameters of the iron nucleus and their environment; also, the cationic occupancy was evaluated and the results were checked with X-ray refinement results. Content Type Journal Article Pages 1-6 DOI 10.1007/s10948-011-1181-x Authors A. L. Guerrero-Serrano, Centro de Investigación en Materiales Avanzados, S.C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31120 Chihuahua, México T. J. Pérez-Juache, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, Centro, 78000 San Luis Potosí, SLP, México M. Mirabal-García, Instituto de Física, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, Centro, 78000 San Luis Potosí, SLP, México J. A. Matutes-Aquino, Centro de Investigación en Materiales Avanzados, S.C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31120 Chihuahua, México S. A. Palomares-Sánchez, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, Centro, 78000 San Luis Potosí, SLP, México Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    The theoretical study of the superconducting state parameters (SSP) namely electron–phonon coupling strength λ , Coulomb pseudopotential μ ∗ , transition temperature T C , isotope effect exponent α , and effective interaction strength N O V of 4d-transition metals superconductors have been made extensively in the present work using a model potential formalism for the first time. In the present computation, the use of pseudo-alloy-atom model (PAA) is proposed and found successful. A considerable influence of various exchange and correlation functions on λ and μ ∗ is found from the present study. The present results of the SSP are found in qualitative agreement with the available experimental data wherever exist. Content Type Journal Article Pages 1-8 DOI 10.1007/s10948-011-1182-9 Authors Aditya M. Vora, Parmeshwari 165, Vijaynagar Area, Hospital Road, Bhuj–Kutch, 370 001 Gujarat, India Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    In this study, the effects of partial Sb 3+ ion substitutions for the Y sites and the Cu sites on the superconducting properties of YBa 2 Cu 3 O y (Y123) ceramic superconductors were investigated. The samples were prepared by the conventional solid-state reaction method and the properties of the samples were investigated by means of X-ray diffraction, AC magnetic susceptibility measurements, scanning electron microscope, and energy dispersive X-ray analysis. The critical temperatures were determined to be in the range of 80–92 K for both Systems I and II. It was found that Sb-addition leads to the formation of the non-superconducting YBa 2 SbO 6 phase, which has a negative effect on the critical temperature, since the highest critical temperature was measured for pure Y123. However, the increasing substitution level has a negligible effect on the X-ray diffraction analysis peak intensities of the superconducting phases. In addition, SEM images showed that Sb substitution decreases the grain size and modifies the microstructure development, which makes the samples denser. Content Type Journal Article Pages 1-13 DOI 10.1007/s10948-011-1180-y Authors Gönül B. Akyüz, Physics Department, Adnan Menderes University, 09100 Aytepe, Aydın, Turkey Kemal Kocabaş, Faculty of Science, Physics Department, Dokuz Eylül University, 35160 Buca, İzmir, Turkey Aylin Yıldız, Faculty of Science, Physics Department, Dokuz Eylül University, 35160 Buca, İzmir, Turkey Lütfi Özyüzer, Department of Physics, İzmir Institute of Technology, 35430 Urla, İzmir, Turkey Muhsin Çiftçioğlu, Chemical Engineering Department, İzmir Institute of Technology, 35430 Urla, İzmir, Turkey Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    As experimentally well established, undoped LaFeAsO is antiferromagnetic below 137 K with the magnetic moments lying on the Fe sites. We determine the orthorhombic body-centered group Imma (74) as the space group of the experimentally observed magnetic structure in the undistorted lattice, i.e., in a lattice possessing no structural distortions in addition to the magnetostriction. We show that LaFeAsO possesses a partly filled “magnetic band” with Bloch functions that can be unitarily transformed into optimally localized Wannier functions adapted to the space group Imma . This finding is interpreted in the framework of a nonadiabatic extension of the Heisenberg model of magnetism, the nonadiabatic Heisenberg model. Within this model, however, the magnetic structure with the space group Imma is not stable but can be stabilized by a (slight) distortion of the crystal turning the space group Imma into the space group Pnn 2 (34). This group-theoretical result is in accordance with the experimentally observed displacements of the Fe and O atoms in LaFeAsO as reported by Clarina de la Cruz et al. (Nature 453:899, 2008 ). Content Type Journal Article Pages 1-15 DOI 10.1007/s10948-011-1177-6 Authors Ekkehard Krüger, Institut für Materialwissenschaft, Materialphysik, Universität Stuttgart, 70569 Stuttgart, Germany Horst P. Strunk, Institut für Materialwissenschaft, Materialphysik, Universität Stuttgart, 70569 Stuttgart, Germany Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    The first principles FLAPW–GGA method was used for the comparative study of the structural and electronic properties of three related tetragonal ThCr 2 Si 2 -type phases KFe 2 Ch 2 , where Ch are S, Se, and Te. The main trends in electronic bands, densities of states, and Fermi surfaces for A Fe 2 Ch 2 were analyzed in relation to their structural parameters. We found that anion replacements (S↔Se↔Te) produce no critical changes in the electronic structure of KFe 2 Ch 2 phases. On the other hand, our analysis of structural and electronic parameters for hypothetical KFe 2 Te 2 allows us to propose this system as a perspective parent phase for search of new iron-chalcogenide superconducting materials. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1184-7 Authors I. R. Shein, Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg, Russia A. L. Ivanovskii, Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg, Russia Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description: Erratum to: Cooperative Time-Reversal Symmetry Breaking Induced by a Magnetic Field in a Quasi-2D d-Wave Superconductor Content Type Journal Article Pages 1-1 DOI 10.1007/s10948-011-1191-8 Authors S. Char fi-Kaddour, Laboratoire de Physique de la Matière Condensée, Département de Physique, Faculté des Sciences de Tunis, 1060 Tunis, Tunisia A. Ben Ali, Laboratoire de Physique de la Matière Condensée, Département de Physique, Faculté des Sciences de Tunis, 1060 Tunis, Tunisia M. Héritier, Laboratoire de Physique des Solides, associé au CNRS, Bâtiment 510, Université Paris-Sud, 91405 Orsay, France R. Bennaceur, Laboratoire de Physique de la Matière Condensée, Département de Physique, Faculté des Sciences de Tunis, 1060 Tunis, Tunisia Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Bulk superconducting samples of type GdBa 2 Cu 3− x Ru x O 7− δ , Gd-123, with x =0.0–0.3 were prepared by the conventional solid-state reaction technique. X-ray powder diffraction (XRD), scanning electron microscope (SEM), electron dispersive X-ray (EDX) and electrical-resistivity measurements were performed in order to investigate the effect of Ru 4+ ions substitution on Gd-123 phase. Enhancement of both phase formation and the superconducting transition temperature T c for GdBa 2 Cu 3− x Ru x O 7− δ phase up to x =0.05 was observed from XRD and electrical-resistivity measurement, respectively. This enhancement was confirmed with the calculated relative volume fraction. For x 〉0.05, suppression of both phase formation and T c was obtained and the superconductivity was completely destroyed around x =0.3. The normal-state electrical resistivity was analyzed by the two- and three-dimensional variable range hopping (2D-VRH and 3D-VRH) and Coulomb gap CG. The results showed that the dominant mechanism was CG for x ≤0.075, while was 3D-VRH for x ≥0.15. Content Type Journal Article Pages 1-10 DOI 10.1007/s10948-011-1187-4 Authors R. Awad, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt A. I. Abou-Aly, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt S. A. Mahmoud, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt M. ME. Barakat, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    This paper presents the synthesis and characterization of the new superconducting compounds with nominal composition, RE 3 Ba 5 Cu 8 O 18 , RE=Y, Sm and Nd. The onset critical temperatures of the present samples are 97.5, 97 and 95 K for the RE=Y, Sm and Nd, respectively. The first two values are the highest for the RE–Ba–Cu–O superconductors recorded to date. The RE 3 Ba 5 Cu 8 O 18 samples crystallize in the orthorhombic system, with increased unit cell volume as Sm and Nd replace the element Y. Content Type Journal Article Pages 1-4 DOI 10.1007/s10948-011-1176-7 Authors Ugur Topal, TUBITAK-UME (National Metrology Institute), 41470 Gebze-Kocaeli, Turkey Mustafa Akdogan, Department of Physics, Abant Izzet Baysal University, 14280 Bolu, Turkey Husnu Ozkan, Department of Physics, Middle East Technical University, 06531 Ankara, Turkey Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Epitaxial growth of CeO 2 buffer layers on biaxially textured (001)Ni tapes was studied using pulsed laser deposition. Relationships between microstructure and deposition parameters were systematically studied in order to develop reliable long tape coating processes. It was found that orientation and texture of CeO 2 buffer layers were sensitive to deposition parameters. X-ray diffraction analyses showed that CeO 2 buffer layers had pure (001) orientation at 860 °C. Under optimized deposition conditions, highly (001) oriented CeO 2 buffer layers have been achieved at a high deposition rate of 1.5 nm/s in-plane texture and out-plane texture of CeO 2 buffer layers were 4.25 degrees and 5.85 degrees, respectively. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1172-y Authors Ying Wang, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Linfei Liu, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Huaran Liu, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Xiaokun Song, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Dan Hong, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Da Xu, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Shengping Zhu, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Yijie Li, Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800# Dong Chuan Road, Shanghai, 200240 P.R. China Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description: Reflection on the 2nd International Conference on Superconductivity and Magnetism-ICSM2010 Content Type Journal Article Pages 1-4 DOI 10.1007/s10948-011-1185-6 Authors Ali Gencer, Faculty of Sciences, Physics Department, Ankara University, Tandoğan, 06100 Ankara, Turkey Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    This study reports the effect of Gd addition on magnetic and structural properties of Bi 1.8 Pb 0.35 Sr 1.9 Ca 2.1 Cu 3 Gd x O y superconductor with x =0, 0.1, 0.2, 0.3, 0.4 and 0.5 by means of ac susceptibility measurements at various ac fields (ranging from 270 to 1352 A/m) and scanning electron microscopy (SEM) images. Critical onset ( and loss peak temperatures ( T p ) were qualitatively estimated from the ac susceptibility curves. The peak temperature at zero ac-magnetic field ( T p0 ) and intergrain critical current densities ( J c ) were theoretically calculated from the ac susceptibility plots via the critical state models. The results show that peak temperatures and critical current densities were found to decrease with increasing Gd addition. Moreover, using a self-field approximation together with J c dependence on temperature, the characteristic length ( L c ) associated with the pinning force is estimated to be approximately the same as the average grain size ( R g ) of the pinning center because of the linear decrease in J c with increasing temperature. Surface morphology and grain connectivity of the samples were also obtained to degrade with increase in the Gd addition from SEM investigations. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1174-9 Authors G. Yildirim, Department of Physics, Abant Izzet Baysal University, Bolu, 14280 Turkey Y. Zalaoglu, Department of Physics, Osmaniye Korkut Ata University, Osmaniye, 80000 Turkey M. Akdogan, Department of Physics, Abant Izzet Baysal University, Bolu, 14280 Turkey S. P. Altintas, Department of Physics, Abant Izzet Baysal University, Bolu, 14280 Turkey A. Varilci, Department of Physics, Abant Izzet Baysal University, Bolu, 14280 Turkey C. Terzioglu, Department of Physics, Abant Izzet Baysal University, Bolu, 14280 Turkey Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    In this paper, we report experimental results concerning the magnetic properties and the magnetoresistance effect of [Fe/Pt] n and [Pt/Fe] n electrodeposited multilayers. Two series of multilayers starting with Pt and Fe layers, respectively, were grown onto glass substrate covered with electroless deposited amorphous Ni. We investigated the effect of the seed layer (Pt or Fe) and Pt layer thicknesses on the magnetic and magnetoresistance properties of electrodeposited multilayers. The structure and morphology of the samples were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). The hysteresis loops of the [Fe/Pt] n and [Pt/Fe] n multilayers showed that the magnetic properties strongly depend on the Pt thickness and on the seed layer (the first layer deposited onto the glass substrate). [Fe/Pt] n and [Pt/Fe] n electrodeposited multilayers display magnetoresistance (∼15%) effect which can be explained mainly by the spin-dependent scattering of conduction electrons between Fe layers through a Pt layer and by the existence of anti-ferromagnetic coupling between subsequent Fe layers. The existence of a GMR effect in Fe/Pt multilayers is very promising for technological applications (e.g., magnetoresistance sensors). Content Type Journal Article Pages 1-8 DOI 10.1007/s10948-011-1173-x Authors D. Pinzaru (Tanase), Faculty of Physics, “Al. I. Cuza” University, Bv. Carol I, No. 11, 700506 Iasi, Romania S. I. Tanase, Faculty of Physics, “Al. I. Cuza” University, Bv. Carol I, No. 11, 700506 Iasi, Romania P. Pascariu, Faculty of Physics, “Al. I. Cuza” University, Bv. Carol I, No. 11, 700506 Iasi, Romania L. Vlad, Faculty of Physics, “Al. I. Cuza” University, Bv. Carol I, No. 11, 700506 Iasi, Romania C. Pirghie, Department of Mechanical Engineering, ”Stefan cel Mare” University, 720225 Suceava, Romania V. Georgescu, Faculty of Physics, “Al. I. Cuza” University, Bv. Carol I, No. 11, 700506 Iasi, Romania Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    (Tl 1− x Bi x )(Sr 2− y Ba y )Ca 3 Cu 4 O z ((Tl,Bi)-1234) samples ( x =0.1–0.3, y =0.4–1.5) were synthesized under ambient pressure by using a two-step solid-state reaction method to investigate the effect of Ba substitution on the formation and superconducting properties of the (Tl,Bi)-1234 phase. X-ray diffraction analysis shows that nearly single-phased samples are obtained for (Tl 0.8 Bi 0.2 )(Sr 2− y Ba y )Ca 3 Cu 4 O z (0.8≤ y ≤1.2), suggesting that control of the composition ratio of Sr and Ba in the bridging layer is a key to stabilizing the 1234-type structure. The critical temperature for the nearly single-phased samples remained between 106.9 K and 109.1 K and was not significantly affected by the change in the Ba content. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1179-4 Authors H. K. Lee, Department of Physics, Kangwon National University, Chuncheon, 200-701 Republic of Korea Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    In this paper we examine the role of crystal chemistry factors in creating conditions for formation of magnetoelectric ordering in BiFeO 3 . It is generally accepted that the main reason of the ferroelectric distortion in BiFeO 3 is concerned with a stereochemical activity of the Bi lone pair. However, the lone pair is stereochemically active in the paraelectric orthorhombic ß-phase as well. We demonstrate that a crucial role in emerging of phase transitions of the metal-insulator, paraelectric-ferroelectric and magnetic disorder-order types belongs to the change of the degree of the lone pair stereochemical activity—its consecutive increase with the temperature decrease. Using the structural data, we calculated the sign and strength of magnetic couplings in BiFeO 3 in the range from 945 °C down to 25 °C and found the couplings, which undergo the antiferromagnetic → ferromagnetic transition with the temperature decrease and give rise to the antiferromagnetic ordering and its delay in regard to temperature, as compared to the ferroelectric ordering. We discuss the reasons of emerging of the spatially modulated spin structure and its suppression by doping with La 3+ . Content Type Journal Article Pages 1-17 DOI 10.1007/s10948-011-1178-5 Authors L. M. Volkova, Institute of Chemistry, Far Eastern Branch of Russian Academy of Science, 159, 100-Let Prosp., Vladivostok, 690022 Russia D. V. Marinin, Institute of Chemistry, Far Eastern Branch of Russian Academy of Science, 159, 100-Let Prosp., Vladivostok, 690022 Russia Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    In this work, we present a systematic study on the effect of sintering time on the superconducting behavior of the Hg 0.6 Pb 0.25 Sb 0.15 Ba 2 Ca 2 Cu 3 O 8+ δ compound. Bulk polycrystalline samples have been prepared by a solid state reaction method. It has been observed that the as grown Hg 0.6 Pb 0.25 Sb 0.15 Ba 2 Ca 2 Cu 3 O 8+ δ compound corresponds to the 1223 phase. Electrical resistivity, using the four probe technique, was used to find the transition temperature T c . The highest T c (off) and T c (on) were found to be 116 K and 132 K, respectively, for the sample preparation with a sintering time of 24 hours. X-ray diffraction (XRD) analysis showed a tetragonal structure with a decrease of the c -axis lattice constant with an increase of the sintering time. It was found that the increase of the sintering time produces a change in the c / a and volume fraction V Ph(1223) . Content Type Journal Article Pages 1-4 DOI 10.1007/s10948-011-1153-1 Authors Kareem A. Jasim, Department of Physics, College of Education, Ibn-Al-Haithem, University of Baghdad, Baghdad, Iraq Tariq J. Alwan, Department of Physics, College of Education, Al-Mustansiriyah University, Baghdad, Iraq H. K. Al-Lamy, Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq H. L. Mansour, Department of Physics, College of Education, Al-Mustansiriyah University, Baghdad, Iraq Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    La 0.85 Ag 0.15 MnO 3 , the colossal magnetoresistance compound was prepared and the neutron powder diffraction patterns at different temperatures down to 19 K were recorded to study their crystal structure and magnetic properties. These patterns were analyzed by the Rietveld refinement technique and are found to be free from any impurity phase. The compound is found to crystallize in a mixture of and Pnma space group and the phase fraction is found to vary with temperature. A cross-over from dominated high temperature phase to Pnma dominated low temperature phase at around 130 K was observed. At low temperatures, especially below 285 K, the diffraction patterns could be refined by including the magnetic reflections corresponding to ferromagnetic structure. The refined magnetic moment of Mn ions is found to be along b axis of the unit cell with a maximum moment of 3.74 μ B at 19 K and this value is comparable to the saturation magnetization observed at 20 K from magnetization measurement. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1147-z Authors B. Samantaray, Department of Physics, Indian Institute of Technology Guwahati, Guwahati, 781039 India S. K. Srivastava, Department of Physics, Indian Institute of Technology Guwahati, Guwahati, 781039 India S. Ravi, Department of Physics, Indian Institute of Technology Guwahati, Guwahati, 781039 India I. Dhiman, Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085 India A. Das, Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085 India Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    A theoretical calculation on YbOs 4 Sb 12 filled skutterudite is reported. The calculated energy bands yield indication of a semimetallic behavior, while the projected density of states provide support for the existence of hybridization formed by Yb f-, Os d-, and Sb p-states. From the analysis of the energy bands that crosses the E f , it is possible to infer a high effective mass; this value is added to the existence of a strong hybridization yielded indication of the heavy Fermion behavior for this compound which agrees with the experimental information available. The absence of a minigap provides an indication that this compound is not likely to serve as a good thermoelectric material, unless doped in a certain direction as to enhance the probability to open the necessary minigap between the valence and conduction bands. Crystal orbital overlap population analysis yielded indication for the absence of a ferromagnetic instability. Content Type Journal Article Pages 1-6 DOI 10.1007/s10948-011-1152-2 Authors Donald H. Galvan, Centro de Nanociencias y Nanotecnologia, Universidad Nacional Autónoma de México, Apartado Postal 2681, CP 22800 Ensenada, B.C., México Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Co 3 O 4 /CoO nanoparticles have been synthesized by a simple method which is based on the ball-milling and calcination of cobalt acetate and citric acid. The samples were characterized using X-ray diffraction, transmission electron microscope, and Fourier transform infrared spectroscopy. The results show that Co 3 O 4 nanoparticles with an average particle size of ∼40 nm can be obtained by calcination of ball-milled precursors at relatively low temperature (350 °C) for 3 hours. It should be noted that it is possible to control the size of Co 3 O 4 particles by calcination temperature, calcination time and also by ball-milling duration using this method. Meanwhile, the pure CoO nanoparticles were obtained successfully by thermal decomposition of Co 3 O 4 at 950 °C and quickly quenching to liquid nitrogen. Content Type Journal Article Pages 1-4 DOI 10.1007/s10948-011-1141-5 Authors I. Manouchehri, Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 Iran P. Kameli, Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 Iran H. Salamati, Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 Iran Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    We investigate the spin-valley current in a strain-engineered graphene magnetic system, normal region (N)/strain region(S)/ferromagnetic region (F)/normal region (N) junction. Locally strained region S leads to valley-dependent current, and ferromagnetic region F leads to the spin-dependent current. We find that pure valley current can be created easily by applying the real-vector potential that is equal to the pseudo-vector potential caused by strains in the S-region. In this work, we focus on the spin current in each valley when exchange field is applied in the F-region, and find that the linear control of spin-valley polarization by gate potential is possible. It is also found that when the current is carried only by the carriers in one valley (pure valley current), pure spin-up current can be linearly altered to pure spin-down current by tuning the gate potential, in the case of very large-F-thickness junction. Our work is applicable for devising controllable spin-valley-current electronics circuits. Content Type Journal Article Pages 1-8 DOI 10.1007/s10948-011-1138-0 Authors Bumned Soodchomshom, Thailand Center of Excellence in Physics, Commission Higher on Education, Ministry of Education, Bangkok, 10400 Thailand Peerasak Chantngarm, Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Pathumwan Institute of Technology, Bangkok, 10330 Thailand Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Here, the superconducting and AC/DC magnetic properties of REBa 2 Cu 3 O 7− δ (RE: Eu, Gd, Ho and Er) are investigated in order to understand the inter-granular and intra-granular behavior of these compounds. These compounds were prepared by standard solid-state reaction route. ErBa 2 Cu 3 O 7− δ (Er-123) and HoBa 2 Cu 3 O 7− δ (Ho-123) (consisting of heavier rare earth) show higher orthorhombic splitting in their XRD patterns than those observed for EuBa 2 Cu 3 O 7− δ (Eu-123) and GdBa 2 Cu 3 O 7− δ (Gd-123) (consisting of lighter rare earth). Even though Eu, Gd, Ho and Er are magnetic elements, substitution of these at Y site in Y-123 does not change the superconducting transition temperature ( T c ). Er-123 and Ho-123 exhibit very sharp superconducting transition while Eu-123 and Gd-123 exhibit relatively broad transition with little hump at the lower part of transition close to the long-range superconducting state with zero resistance. In addition to that, Eu-123 and Gd-123 show relatively higher normal state resistivity than those of Er-123 and Ho-123. The AC susceptibility measurements reveal that these compounds possess different strength of inter-granular couplings. The hump in the superconducting transition of Eu and Gd is not due to the lack of inter-grain couplings in these samples because of having better grain connectivity in the samples as compared to other rare earth elements in REBa 2 Cu 3 O 7− δ system. Though intra-grain peak is insensitive to the applied magnetic field, inter-grain peak is sensitive to the applied magnetic field. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1139-z Authors N. P. Liyanawaduge, Industrial Technology Institute, P.O. Box 363, Baudhaloka Mawatha, Colombo 07, Sri Lanka Anuj Kumar, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India B. S. B. Karunarathne, University of Peradeniya, Peradeniya, 20400 Sri Lanka Amita Malik, Dyal Singh College, Lodhi Road, New Delhi, 110003 India H. Kishan, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India V. P. S. Awana, National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012 India Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    In this work, we report experimental results concerning the giant magnetoresistance effect and the magnetic properties of [Co/Zn] n and [Zn/Co] n electrodeposited multilayers. Two series of multilayers starting with Co and Zn layers, respectively, were grown onto Cu (100) substrate under identical conditions. We investigated the effect of the seed layer (Co or Zn) and Zn layer’s thicknesses on the magnetic and magnetoresistant properties of electrodeposited multilayers. We found out that the magnetic anisotropy and the shape of the hysteresis cycle are strongly influenced by the multilayer features. The magnetic properties of the [Co/Zn] n and [Zn/Co] n strongly depend on the Zn thickness and on the seed layer (the first layer deposited onto the Cu substrate). The coercivity fields varied between (145 Oe–208 Oe) as a function of the Zn layer’s thicknesses. [Co/Zn] n and [Zn/Co] n electrodeposited multilayers display magnetoresistance (14%) effect which can be explained mainly by the exchange interaction among neighboring layers and by the spatially inhomogeneous magnetic structure of the nanostructured multilayer; in addition, the thickness of the Zn interlayer has an important role on the transportation and diffusion processes. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1145-1 Authors P. Pascariu, Faculty of Physics, “Alexandru Ioan Cuza” University, Iaşi, 700506 Romania S. I. Tanase, Faculty of Physics, “Alexandru Ioan Cuza” University, Iaşi, 700506 Romania D. Pinzaru (Tanase), Faculty of Physics, “Alexandru Ioan Cuza” University, Iaşi, 700506 Romania V. Georgescu, Faculty of Physics, “Alexandru Ioan Cuza” University, Iaşi, 700506 Romania Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    The compounds Gd 1− x Nd x BaSrCu 3 O 7− δ (where x =0, 0.1 and 0.2) and Gd 1− x Dy x BaSrCu 3 O y (where x =0, 0.1 and 0.3) were synthesized using the solid state reaction technique. The tetragonal crystallization of the compounds was identified by powder X-ray diffraction. The microrange crystallite formation and the substitution elements present in the compounds were observed by SEM and EDX analyses. The suppression of superconducting transition temperature and the variation of magnetization parameters for the substitution of rare-earth magnetic elements Nd and Dy ions were observed by low-temperature electrical resistance and magnetization measurements. Content Type Journal Article Pages 1-8 DOI 10.1007/s10948-011-1137-1 Authors A. Manigandan, Department of Physics, Anna University Chennai, Chennai, 600025 India V. Anbarasu, Department of Physics, Anna University Chennai, Chennai, 600025 India K. Sivakumar, Department of Physics, Anna University Chennai, Chennai, 600025 India Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    We fabricated CeO 2 films using pulsed laser deposition (PLD) for YBa 2 Cu 3 O 7− δ coated conductors on Ni–5 at.%W alloy substrates and investigated the effect of Ni–5 at.%W tapes on the epitaxial growth and surface morphologies of CeO 2 deposited on various substrates at various temperatures ranging from 650 to 770 °C. The texture and microstructure of substrates and CeO 2 films were measured by X-ray diffraction (XRD), optical microscope (OM), field emission scanning electron microscope (FESEM) and atomic force microscopy (AFM). It was found that the texture and microstructure of Ni–5 at.%W substrates, such as Ni(111), grain size, the depth of grain boundary grooves and surface roughness, affected the growth of CeO 2 films. Especially, the depth of grain boundary grooves of substrates resulted in high intensity of CeO 2 (111) peak and high surface roughness of CeO 2 films. We also found that high growth temperature effectively reduced the influence of substrate surface roughness on the epitaxial growth of CeO 2 films. CeO 2 films with high in-plane and out-of-plane alignments (Δ φ =5.54°, Δ ω =3.40°) were obtained under optimum condition. Content Type Journal Article Pages 1-7 DOI 10.1007/s10948-011-1136-2 Authors Shengping Zhu, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Linfei Liu, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Da Xu, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Huaran Liu, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Xiaokun Song, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Dan Hong, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Wang Ying, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Yijie Li, Key Laboratory of Artificial Structures and Quantum Control, Ministry of Education, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240 P.R. China Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939

Description:    Modification of AG-OV-1 activated carbon with an ozone-oxygen mixture was studied. Changes in the porosity, state of the surface, and adsorption capacity of ozonized samples were examined in relation to the oxidation duration. Explanation are suggested for the patterns obtained. Content Type Journal Article Pages 597-601 DOI 10.1134/S1070427211040070 Authors O. V. Belyaeva, Kemerovo Technological Institute of Food Industry, Kemerovo, Russia T. A. Krasnova, Kemerovo Technological Institute of Food Industry, Kemerovo, Russia S. A. Semenova, Kemerovo Technological Institute of Food Industry, Kemerovo, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The available published data on thermodynamic properties of liquid arsenic-lead alloys were analyzed and mathematically treated on which basis the limiting activity coefficients of arsenic in liquid lead were calculated for several temperatures. Content Type Journal Article Pages 602-606 DOI 10.1134/S1070427211040082 Authors A. G. Morachevskii, St. Petersburg State Polytechnical University, St. Petersburg, Russia T. V. Butukhanova, St. Petersburg State Polytechnical University, St. Petersburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The effect of organic solvents miscible with water (acetone, methyl ethyl ketone, 2-propanol, 2-ethoxyethanol, dimethylformamide) on the composition, structure, and crystal transformations of polyborasiloxanes formed by hydrolytic polycocondensation of tetraethoxysilane with boric acid under the conditions of base catalysis (NH 4 OH) was studied. Content Type Journal Article Pages 696-700 DOI 10.1134/S1070427211040240 Authors V. V. Malyshev, Engineering-Technological Institute, Ukraine Open International Institute for Human Development, Kiev, Ukraine M. G. Voronkov, Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, St. Petersburg, Russia S. V. Klimenko, Engineering-Technological Institute, Ukraine Open International Institute for Human Development, Kiev, Ukraine V. S. Klimenko, Engineering-Technological Institute, Ukraine Open International Institute for Human Development, Kiev, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    A procedure was developed for preparing a new heterocyclically substituted chelating aminopolymer, N-2-(2-pyridyl)ethyl chitosan, by direct addition of 2-vinylpyridine to chitosan under the conditions of synthesis in gel. The resulting polymer has the degree of substitution of up to 1. The ability of the samples obtained to sorb transition and noble metal ions was evaluated. Content Type Journal Article Pages 713-718 DOI 10.1134/S1070427211040276 Authors A. V. Pestov, Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia S. Yu. Bratskaya, Institute of Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia Yu. A. Azarova, Institute of Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia M. I. Kodess, Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia Yu. G. Yatluk, Postovskii Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The solvent effect on the kinetic features of the synthesis and molecular characteristics of the copolymers in homogeneous radical copolymerization of sodium 2-acrylamido-2-methylpropanesulfonate with sodium acrylate in water and water-dimethyl sulfoxide mixtures (75: 25, 50: 50, 25: 75) at pH 9 and 60°C in the presence of potassium persulfate was studied Content Type Journal Article Pages 679-684 DOI 10.1134/S1070427211040215 Authors V. F. Kurenkov, Kazan State University of Technology, Kazan, Tatarstan, Russia A. V. Kurenkov, Kazan State University of Technology, Kazan, Tatarstan, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Condensation of a vapor-air mixture and boiling in a flowing down water film in an upright tubular evaporator was examined. We studied techniques to intensify heat exchange by installation of turbulators in a form of coil on a heat transfer surface of pipes and developed dependencies to estimate values of heat transfer coefficient in condensation and boiling. Content Type Journal Article Pages 539-541 DOI 10.1134/S1070427211030360 Authors N. A. Voinov, Siberian State Technological University, Krasnoyarsk, Russia O. P. Zhukov, Siberian State Technological University, Krasnoyarsk, Russia A. N. Voinov, Siberian State Technological University, Krasnoyarsk, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Deformation-strength, sorption, and operation properties of composite materials made from polyvinyl alcohol and coproducts of diesel biofuel production (rape-cake and glycerin) were studied with the aim to apply them for agricultural needs. Content Type Journal Article Pages 719-723 DOI 10.1134/S1070427211040288 Authors V. Grazhulevichene, Lithuanian Agricultural University, Kaunas, Lithuania L. Augulis, Lithuanian Agricultural University, Kaunas, Lithuania M. Gumbite, Lithuanian Agricultural University, Kaunas, Lithuania V. Makarevichene, Lithuanian Agricultural University, Kaunas, Lithuania Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Effect of parameters of the ion exchange of Na + cations for La 3+ in Y zeolites with SiO 2 /Al 2 O 3 molar ratios of 5.1 and 6.0 on the degree of exchange and physicochemical properties of the resulting LaNaY samples was studied. The conditions in which deeply substituted La-forms of a Y zeolite with high degree of crystallinity can be obtained were determined. Content Type Journal Article Pages 577-581 DOI 10.1134/S1070427211040033 Authors A. N. Khazipova, Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Ufa, Bashkortostan, Russia R. R. Il’yasova, Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Ufa, Bashkortostan, Russia A. A. Tantseva, Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Ufa, Bashkortostan, Russia B. I. Kutepov, Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Ufa, Bashkortostan, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    The conditions of emulsification of imported analogs of Russian epoxy resins in the presence of nonionic surfactants were studied. The curing kinetics and the hardness of coatings formed from compounds containing epoxy emulsions and EPILINK 701 and Waterpoxy 751 curing agents were examined. Content Type Journal Article Pages 479-485 DOI 10.1134/S1070427211030256 Authors E. V. Shinkareva, Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus V. D. Koshevar, Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 3

Description:    Hydroxylation of phenol with a 25% aqueous solution of hydrogen peroxide in polar protic and aprotic solvents on TS-1 heterogeneous catalyst under various conditions was studied. The major reaction products (hydroquinone, pyrocatechol) and their ratio were determined. A kinetic model describing the hydroxylation in accordance with the Rideal-Eley mechanism was chosen. Content Type Journal Article Pages 640-648 DOI 10.1134/S1070427211040148 Authors V. V. Potekhin, Himtek Engineering Private Joint-Stock Company, St. Petersburg, Russia V. A. Kulikova, St. Petersburg State Institute of Technology, St. Petersburg, Russia V. V. Vasil’ev, St. Petersburg State Engineering and Economic University, St. Petersburg, Russia E. G. Kohina, St. Petersburg State Institute of Technology, St. Petersburg, Russia V. M. Potekhin, St. Petersburg State Institute of Technology, St. Petersburg, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 4

Description:    Corrosion resistance of tantalum, titanium, and a number of carbon materials in a NaOH melt in the atmosphere of argon was studied in the temperature range 400–700°C. Content Type Journal Article Pages 854-858 DOI 10.1134/S1070427211050193 Authors N. A. Medvedeva, Bashkir State University, Ufa, Bashkortostan, Russia R. Kh. Yumagulova, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia I. A. Ionova, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia S. I. Kuznetsov, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia S. V. Kolesov, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    Sorption properties of the weakly basic complex-forming sorbent bis-1,3,5-dithiazinane-5-yl-ethane with respect to Pd(II), Ag(I), and Hg(II) were studied. The sorbent was prepared from ethylenediamine, formic aldehyde, and H 2 S by a single-reactor procedure. Content Type Journal Article Pages 786-791 DOI 10.1134/S1070427211050089 Authors G. R. Anpilogova, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Russia N. S. Akhmadiev, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Russia G. R. Khabibullina, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Russia V. R. Akhmetova, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    The mechanism of methyl methacrylate polymerization in the presence of 1,3,5-trithiane was studied. Content Type Journal Article Pages 873-876 DOI 10.1134/S1070427211050223 Authors E. I. Yarmukhamedova, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia Yu. I. Puzin, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia I. A. Ionova, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia Yu. B. Monakov, Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, Ufa, Bashkortostan, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    Changes in the redox and antiradical properties of humic acids upon exposure to monochromatic UV light of an excilamp and polychromatic light of a helium lamp were studied. Content Type Journal Article Pages 820-825 DOI 10.1134/S1070427211050144 Authors N. V. Yudina, Institute of Oil Chemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia O. N. Chaikovskaya, Tomsk State University, Tomsk, Russia I. V. Sokolova, Tomsk State University, Tomsk, Russia E. V. Mal’tseva, Institute of Oil Chemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia L. V. Nechaev, Tomsk State University, Tomsk, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    Protective efficiency of preservation materials based on spent motor oil and unrefined rapeseed oil with a zinc filler and additions of micrographite or multilwalled carbon nanotubes was studied. Content Type Journal Article Pages 803-810 DOI 10.1134/S1070427211050119 Authors N. V. Shel’, Tambov State Technical University, Tambov, Russia A. O. Golovchenko, Tambov State Technical University, Tambov, Russia V. I. Vigdorovich, Tambov State Technical University, Tambov, Russia L. E. Tsygankova, Derzhavin State University, Tambov, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    The specific surface area, micropore volume, and pore size distribution for the Zr(IV), Sn(IV), and Ti(IV) oxyhydrates and double hydrates of the composition M x Mn 1− x O y · n H 2 O and M x Al1 − x O y · n H 2 O [M = Zr(IV), Sn(IV), Ti(IV), x = 0.5–0.9 were calculated. The specific surface charge and zero-charge point in 0.12 M KNO 3 were determined. Content Type Journal Article Pages 756-761 DOI 10.1134/S107042721105003X Authors T. V. Mal’tseva, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine T. V. Yatsenko, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine E. O. Kudelko, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine V. N. Belyakov, Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    Heat of mixing of binary systems was studied formed by acrylic acid with hexane, benzene, acetonitrile, 1,2-dichloroethane and acetic acid at 293.15 K and atmospheric pressure. Content Type Journal Article Pages 898-901 DOI 10.1134/S1070427211050284 Authors V. V. Sergeev, Lviv Polytechnic National University, Lviv, Ukraine V. N. Dibrivnyi, Lviv Polytechnic National University, Lviv, Ukraine Yu. Ya. Van-Chin-Syan, Lviv Polytechnic National University, Lviv, Ukraine Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    A procedure was developed for preparation of lithium and sodium hypothiophosphates from the corresponding alkali-metal and phosphorus sulfides in ethanol. The possibility was explored for preparation of tin(II) hypothiophosphate in an alcoholic solution by an exchange reaction between sodium hypothiophosphate and tin(II) chloride. Content Type Journal Article Pages 762-765 DOI 10.1134/S1070427211050041 Authors S. N. Svirskaya, Southern Federal University, Rostov-on-Don, Russia T. G. Lupeiko, Southern Federal University, Rostov-on-Don, Russia A. S. Pakhomov, Southern Federal University, Rostov-on-Don, Russia E. S. Medvedeva, Southern Federal University, Rostov-on-Don, Russia Journal Russian Journal of Applied Chemistry Online ISSN 1608-3296 Print ISSN 1070-4272 Journal Volume Volume 84 Journal Issue Volume 84, Number 5

Description:    SmFeAsO 0.8 F 0.2 wires with composite Cu/Nb or Ta sheaths have been fabricated using an in situ powder-in-tube method. Cu diffusion into the core was observed, which led to a fuzzy boundary between the sheath and core for Cu/Nb-sheathed SmFeAsO 0.8 F 0.2 wires, and destroyed the superconducting phase of SmFeAsO 0.8 F 0.2 . However, superconductivity has been observed in the Ta-sheathed SmFeAsO 0.8 F 0.2 wires with T c =52.5 K. A severe weak-link effect depressed the development of global supercurrent. A peak effect with a strongly temperature-dependent peak field H peak has been observed in the J c – H curves over the range 10–40 K. The H – T phase diagram was similar to that of a previous report. Content Type Journal Article Pages 1-5 DOI 10.1007/s10948-011-1197-2 Authors Y. L. Chen, Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity R&D Center (SRDC), Southwest Jiaotong University, Mail Stop 165, Chengdu, Sichuan 610031, China Y. J. Cui, Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity R&D Center (SRDC), Southwest Jiaotong University, Mail Stop 165, Chengdu, Sichuan 610031, China H. Zhang, Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity R&D Center (SRDC), Southwest Jiaotong University, Mail Stop 165, Chengdu, Sichuan 610031, China C. H. Cheng, School of Materials Science and Engineering, University of New South Wales, Sydney, 2052 NSW Australia Y. Zhao, Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity R&D Center (SRDC), Southwest Jiaotong University, Mail Stop 165, Chengdu, Sichuan 610031, China Journal Journal of Superconductivity and Novel Magnetism Online ISSN 1557-1947 Print ISSN 1557-1939