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  • 1
    Electronic Resource
    Electronic Resource
    X-ray diffraction study of the structure of a monolayer methanol film adsorbed on graphite (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 5267-5270 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The x-ray diffraction measurements of methanol adsorbed on graphite have been taken over the temperature range 32–150 K and the coverage range 0.02–0.17 molecule A(ring)−2. The diffraction data are analyzed to yield the configuration of the molecule on the surface by means of the least-squares fitting of the whole pattern. The data show clearly that zigzag chains of alternating weak and strong hydrogen bonds, as evidenced by the long and short 0⋅⋅⋅0 separations, are formed in the crystalline monolayer of methanol on graphite. The crystalline solid film near the complete monolayer melts around 142 K in comparison to bulk methanol which melts at 175.4 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459645
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  • 2
    Electronic Resource
    Electronic Resource
    Systematics of elasticity: Ab initio study in B1-type alkaline earth oxides (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 10086-10093 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The elastic properties and their pressure dependence of four B1-type alkaline earth oxides, MgO, CaO, SrO, and BaO, are calculated using the ab initio full-potential linear muffin-tin-orbital (FP-LMTO) generalized gradient approximated (GGA) method to elucidate their systematics. The calculated results agree quite well with the comparable experimental data. The large pressure dependence of c11 and c44 of MgO observed over 25 GPa is not predicted as well as the previous local-density approximation (LDA) calculations. It is inferred that the high-pressure measurement of elastic constant is quite sensitive to nonhydrostaticity. The deviation from the Cauchy relation and the elastic anisotropy are investigated. It is found that the interatomic interaction in SrO is nearest to the two-body force and the many-body contribution is largest in MgO. The elastic anisotropy in SrO and BaO are almost the same and only MgO has a large positive anisotropy under low pressure. The normalized elastic constants cij′ are introduced for more detail analysis. It is found that while there is no substantial difference in c11′ and c12′ of the four oxides, only c44′ and its pressure dependence vary systematically. The difference in the Cauchy deviation and elastic anisotropy of alkaline earth oxides under pressure is characterized by c44. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1371498
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  • 3
    Electronic Resource
    Electronic Resource
    X-ray topographic study on dislocation configuration around indentation in a plastic region of Si single crystal (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 2367-2372 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper describes the dislocation configuration around an indentation on the (111) surface of a Si single crystal. X-ray Lang topography was used. The Burgers vector was identified for each section of the dislocation clustering region based on the change of the contrast of the diffraction pattern with various diffraction vectors. Additionally, the mechanism of dislocation interaction was discussed resulting in the observed configuration. The following results were obtained. The dislocation clustering region was divided into the inner and the outer territories, each of which was further divided into several sections with different Burgers vectors. It was assured that dislocations in the outer territory were perfect, while they split into partial dislocations in the inner territory. Therefore dislocation interactions were possible in the inner territory resulting in stair-rod dislocations. The observed configuration could be explained by the mechanism of the dislocation interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356257
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  • 4
    Electronic Resource
    Electronic Resource
    Improvements in corrosion resistance of Tb-Fe thin films (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 510-511 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electrochemical corrosion of Tb-Fe films was studied by immersion in a NaCl solution. The corrosion resistance was improved by adding Al, Cr, Hf, Mo, and/or Ti to Tb-Fe. The improvement mechanism, which was studied by transmittance change measuring, microscopic observation, and electron probe microanalysis, is the concentration of the additive metals and formation of passive states by the metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99401
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  • 5
    Electronic Resource
    Electronic Resource
    Ion cyclotron resonance in a magnetized sheet plasma : Proceedings of 5th international conference on ion sources (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1359-1361 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Separation of ionic or isotopic species in a magnetized sheet plasma has been studied by using the ion cyclotron resonance method. The sheet plasma was used instead of a cylindrical plasma in which many unfavorable collisions take place. An rf electric field is applied to the plasma by two parallel plate electrodes. It is shown that a resonance is strongly dependent on the plasma space potential across the sheet plasma. The resonance spectra of argon, neon, and nitrogen ions in the low dense sheet plasma with a shallow potential well are clearly observed, while the resonances in high dense plasma with a deep potential well are not observed. It is also found that the resonance frequency for a corresponding ion is proportional to the magnetic field strength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144960
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  • 6
    Electronic Resource
    Electronic Resource
    Erasable optical memory media with thermoplastic/absorbent double layer (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 1777-1778 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A thermoplastic/absorbent double layer type optical memory was developed. The thermoplastic was monodispersed polystyrene of which the molecular weight was 800–110 000, and the absorbent was Cu phthalocyanine. The erasing properties were dependent on the molecular weight. The medium was best when the molecular weight was 2000 and the record/erase repetition could be more than 350. The dye addition to the polystyrene increased the recording sensitivity but decreased the maximum limit of record/erase repetition, so the dye content was preferable to be less than 10 wt. %.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99623
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  • 7
    Electronic Resource
    Electronic Resource
    Microstructure and optical absorption properties of Si nanocrystals fabricated with low-pressure chemical-vapor deposition (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 4006-4011 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a simple technique for fabricating a layer of isolated Si quantum dots on SiO2 glass substrates. This technique uses conventional low-pressure chemical-vapor deposition for an extremely short deposition time in the early stage of poly-Si film growth. The layer after a deposition time of 60 s has isolated Si nanocrystals 5–20 nm in diameter and 2–10 nm in height. The measurements of optical absorption coefficient α show that the absorption edge for Si nanocrystals shifts to higher energies compared to that of bulk Si, indicating a widening of the energy gap caused by quantum size effects. The linear relationship (αhν)1/2 against hν suggests that the Si nanocrystal, whose diameter is as small as 10 nm, basically maintains the properties of an indirect band-gap semiconductor. Special attention must be paid to the Brownian migration of Si nanocrystals for fabricating Si quantum dots. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363359
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  • 8
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    Effect of interlayer interaction on domain structure of CoPt stacked films with perpendicular anisotropy (2015)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2015-01-17
    Description: The effect of interlayer magnetostatic interaction on the domain structure of CoPt (3 nm)/Pt ( δ Pt nm)/CoPt (10 nm) stacked films having perpendicular anisotropy is investigated. The domain structure of the demagnetized CoPt stacked films is observed using magnetic force microscope. The Co 80 Pt 20 stacked films with Pt interlayer thickness δ Pt less than about 20 nm have the maze domain similar to that of the film with δ Pt of 0 nm. This is because the top and bottom layers are connected by the magnetostatic interaction and the magnetization distribution of both layers is integrated. The domain structure of the films with δ Pt around 25 nm is mixture of the maze and irregular domains. For the films with δ Pt over about 30 nm, because the interaction between the top and bottom layers decreases, the irregular domain which is observed in the 3 nm thick CoPt single layer film appears. In the region where the domain structure changes from the maze domain to the irregular one, domain size steeply increases with increase of δ Pt .
    Print ISSN: 0021-8979
    Electronic ISSN: 1089-7550
    Topics: Physics
    Published by American Institute of Physics (AIP)
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  • 9
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    Spatial gradient of dynamic nuclear spin polarization induced by breakdown of the quantum Hall effect (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-01-21
    Description: Author(s): M. Kawamura, K. Kono, Y. Hashimoto, S. Katsumoto, and T. Machida We studied spatial distribution of dynamic nuclear polarization (DNP) in a Hall-bar device in a breakdown regime of the quantum Hall effect (QHE). We detected nuclear magnetic resonance (NMR) signals from the polarized nuclear spins by measuring the Hall voltage V_{xy} using three pairs of voltage p... [Phys. Rev. B 83, 041305] Published Thu Jan 20, 2011
    Keywords: Semiconductors II: surfaces, interfaces, microstructures, and related topics
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 10
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    Spin-Nematic Interaction in the Multiferroic Compound Ba2CoGe2O7 (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-03-27
    Description: Author(s): M. Soda, M. Matsumoto, M. Månsson, S. Ohira-Kawamura, K. Nakajima, R. Shiina, and T. Masuda We demonstrate the existence of the spin-nematic interactions in an easy-plane type antiferromagnet Ba2CoGe2O7 by exploring the magnetic anisotropy and spin dynamics. The combination of neutron scattering and magnetic susceptibility measurements reveals that the origin of the in-plane anisotropy is ... [Phys. Rev. Lett. 112, 127205] Published Wed Mar 26, 2014
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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