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作者:Maiko Kofu , Osamu Yamamuro
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2020, Vol.89 (5)
摘要:The behavior of hydrogen in metals has attracted considerable attention in fundamental and applied research areas for many decades. Among metals, palladium is remarkable because it can absorb large quantities of hydrogen, and hydrogen atoms are highly mobile in the fcc Pd lattice...
作者:Yuki Mizuno , Maiko Kofu , Osamu Yamamuro
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2016, Vol.85 (12)
摘要:The structure of simple molecular glasses has been one of the central issues in the research of glasses. We tried to form the glasses of carbon dioxide (CO2), carbon monoxide (CO), and nitrogen (N2) molecules by slow vapor deposition at 3 K (deposition rate:...
作者:Osamu Yamamuro , Mariko Ishikawa ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 1999, Vol.68 (9), pp.2969-2976
摘要:The heat capacity of plastically crystalline cyanoadamantane wasmeasured with an adiabatic calorimeter in the temperature range5–310 K. A glass transition appeared at 163 K in the supercooledplastic phase. The ordered phase obtained by annealing underwent afirst-order transi...
作者:Osamu Yamamuro , Hiroki Muraoka ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 1995, Vol.64 (8), pp.2722-2725
摘要:A neutron diffraction experiment on the high-temperaturephase of (ND4)2SeCl6 crystal has been performed with atime-of-flight powder diffractometer. The data were collected at 60 Kin the d -spacing range 0.6–6 Å.The Rietveld refinement reveale...
作者:Osamu Yamamuro , Tatsuya Kikuchi
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2011, Vol.80 (4)
摘要:After the analysis of the quasi-elastic neutron scattering (QENS) spectra of lower alcoholic aqueous solutions, we found that the parameter α, which is the number fraction of hydrophobic hydrating water molecules, has an important role in describing the dynamics and other pr...
作者:Osamu Yamamuro , Mariko Higuchi
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2000, Vol.69 (4), pp.991-992
摘要:We report evidence that for a class of fragile-glass formers, the excessspecific heat in the supercooled state near the glass transition temperaturecan be scaled by a parameter defined as the product of temperature andconfigurational entropy. We also show that the scaling does no...
作者:... Takeshi Yamada , Osamu Yamamuro , Seiji Kojima
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2010, Vol.79 (3)
摘要:We study the low-energy vibrational dynamics, called the boson peak (BP), of binary lithium borate glasses as a function of the composition of these glasses by inelastic neutron and Raman scattering. Firstly, we analyze the variations in the properties of the BP with the composit...
作者:... Takeshi Yamada , Osamu Yamamuro , Seiji Kojima
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2010, Vol.79 (3)
摘要:We study the low-energy vibrational dynamics, called the boson peak (BP), of binary lithium borate glasses as a function of the composition of these glasses by inelastic neutron and Raman scattering. Firstly, we analyze the variations in the properties of the BP with the composit...
作者:Osamu Yamamuro , Kenji Maruyama
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2007, Vol.76 (5)
摘要:Quasielastic neutron scattering has been used to investigate the hydration of alcohol clusters in tert -butyl alcohol–water mixture. The measurements were made in a range of alcohol concentration, x TBA, from 0.0 to 0.17 in mole fraction at 25 °C. Fraction, α, of ...
作者:... Masashi Takigawa , Osamu Yamamuro , Zenji Hiroi
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2010, Vol.79 (4)
摘要:A phase transition observed at T p = 7.65 K in the β-pyrochlore oxide superconductor KOs2O6 is studied by means of heat capacity,39K-NMR, and X-ray diffraction measurements using high-quality single crystals. We find evidence of an...

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