JOPSS - Search Results

Journal Articles

Anharmonicity of platinum under HP and HT

Okube, Maki*; Yoshiasa, Akira*; Otaka, Osamu*; Katayama, Yoshinori

High Pressure Research, 23(3), p.247 - 251, 2003/09

https://doi.org/10.1080/0895795032000102423

Times Cited Count：5 Percentile：38.82(Physics, Multidisciplinary)

In order to examine the pressure effect on anharmonic thermal vibrations of Pt, Extended X-ray Absorption Fine Structure (EXAFS) spectra near Pt K-edge and L $_{3}$ -edge were measured in the temperature range from 300 to 800K under pressures up to 6vGPa, using large volume high-pressure devices and synchrotron radiation. We have investigated the anharmonic interatomic potentials by a cumulant expansion method. The values of EXAFS Debye-Waller factors, 2 and 3, become smaller with increase of pressure. The anharmonic effective pair potential $V(u) = (1/2!)au^{2} + (1/3!)bu^{3}$ was evaluated and the potential coefficient a at 0.1MPa and 6GPa are 4.8 and 5.0eV/ $AA $^{2}$$ , respectively. The anharmonic potential parameter decreases with increasing pressure.

Journal Articles

Experimental determination of the mechanism of the tunneling diffusion of H atoms in solid hydrogen; Physical exchange versus chemical reaction

Kumada, Takayuki

Physical Review B, 68(5), p.052301_1 - 052301_4, 2003/08

https://doi.org/10.1103/PhysRevB.68.052301

Times Cited Count：39 Percentile：81.96(Materials Science, Multidisciplinary)

Effect of pressure on the recombination of H atoms produced by UV-photolysis of O-doped solid H was studied using ESR spectroscopy. The recombination rate constant was independent of pressure up to 13 MPa below 4.2 K, whereas it remarkably decreases with the increase in pressure above. The absence of pressure effect indicates that the H atoms do not diffuse by the physical exchange of positions with neighboring H molecules, but by the tunneling reaction H + H H + H.

Journal Articles

Pressure effect on antiferromagnetic ordering in UPb

Haga, Yoshinori; Yamamoto, Etsuji; Onuki, Yoshichika; Nakashima, Miho*; Aoki, Dai*; Onuki, Yoshichika*; Hedo, Masato*; Uwatoko, Yoshiya*

Acta Physica Polonica B, 34(2), p.1239 - 1242, 2003/02

http://www.actaphys.uj.edu.pl/_cur/store/vol34/pdf/v34p1239.pdf

Uranium intermetallic compounds UX (X = Si, Ge, Sn, Pb) form a ariety of magnetic properties including Pauli paramagnetism in USi and UGe, spin fluctuations in USn and antiferromagnetism in UPb. Among them, UPb is an antiferromagnet below the Nel temperature 32 K with a large electronic specific heat = 110 mJ/Kmol. In this study we present the electrical resistivity measurement under high pressure up to 8 GPa. We found that at low pressure $T_{rm N}$ increases with increasing pressure. It has a maximum value 36 K at 3 GPa, then decreases with increasing pressure.In addition we observed an additional resistive anomaly followed by a steep decrease in resistivity below $T_{rm N}$ under pressure.The maximum pressure 8 GPa in the present study was not enough to suppress the antiferromagnetic transition.The critical pressure is estimated to be around 12 GPa.

Journal Articles

Anharmonicity of gold under high-pressure and high-temperature

Okube, Maki*; Yoshiasa, Akira*; Otaka, Osamu*; Fukui, Hiroshi*; Katayama, Yoshinori; Utsumi, Wataru

Solid State Communications, 121(5), p.235 - 239, 2002/02

https://doi.org/10.1016/S0038-1098(01)00494-X

Times Cited Count：11 Percentile：50.69(Physics, Condensed Matter)

In order to examine the pressure effect on the anharmonicity of Au, EXAFS spectra near Au $L_{3}$ -edge were measured at the temperature range from 300 to 1000K under pressure up to 14GPa using large volume high-pressure devices and synchrotron radiation. The values of EXAFS Debye-Waller factors, and , become smaller with increase of pressure, which indicates that the potential width become narrower with pressure. The anharmonic effective pair potentials of Au, $V(u)=au^{2}/2!+bu^{3}/3!$ , at 0.1MPa, 6 and 14GPa have been calculated. The pressure dependence of the coefficient of thermal expansion has also been evaluated.

Journal Articles

The Pressure effect on the recombination and relaxation of hydrogen atoms in solid hydrogen

Shevtsov, V.*; Kumada, Takayuki; Aratono, Yasuyuki; Miyazaki, Tetsuro

Chemical Physics Letters, 319(5-6), p.535 - 541, 2000/03

https://doi.org/10.1016/S0009-2614(00)00201-3

Times Cited Count：14 Percentile：40.85(Chemistry, Physical)

no abstracts in English

Journal Articles

Separation of metals using supercritical carbon dioxide as extraction medium

Meguro, Yoshihiro; Yoshida, Zenko

Bunseki, 1999(11), p.922 - 929, 1999/00

https://ci.nii.ac.jp/naid/10004691265

no abstracts in English

Journal Articles

Pressure effects on spin-gap and antiferromagnetism in the hole-doped spin ladder system Sr $_{2.5}$ Ca $_{11.5}$ Cu $_{24}$ O $_{41}$

Katano, Susumu; *; *; Akimitsu, Jun*; Nishi, Masakazu*; Kakurai, Kazuhisa*

Physica B; Condensed Matter, 259-261, p.1046 - 1047, 1999/00

https://doi.org/10.1016/S0921-4526(98)00692-9

Times Cited Count：10 Percentile：51.88(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Scaling behavior in the Ce-based Kondo semiconductors; NQR/NMR measurements of CeRhSb and CeNiSn under high pressures

Ikushima, Kenji; Yasuoka, Hiroshi; Uwatoko, Yoshiya*; Ishikawa, Yoshikazu*

Physical Review B, 60(21), p.14537 - 14540, 1999/00

https://doi.org/10.1103/PhysRevB.60.14537

Times Cited Count：5 Percentile：33.73(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Pressure effects of the magnetic structures of TbNi $_{2}$ Si $_{2}$ in external fields

*; Moriai, Atsushi; ; Onodera, Akifumi*; Amita, Fujitsugu*; *; Katano, Susumu; *

Physica B; Condensed Matter, 241-243, p.657 - 659, 1998/00

https://doi.org/10.1016/S0921-4526(97)00683-2

Times Cited Count：3 Percentile：27.1(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Pressure effects on the dimerization in the spin-Peierls state of CuGeO $_{3}$

Katano, Susumu; *; Akimitsu, Jun*; Nishi, Masakazu*

Physical Review B, 52(21), p.15364 - 15367, 1995/12

https://doi.org/10.1103/PhysRevB.52.15364

Times Cited Count：25 Percentile：78.76(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Effect of pressure on T $_{c}$ in La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ with x=0.125

Mori, Nobuo*; *; *; *; Ueda, Yutaka*; *; Katano, Susumu

J. Supercond., 7(5), p.819 - 821, 1994/10

no abstracts in English

Journal Articles

Structural phase transitions and superconductivity of La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ with x=0.125; Effects of pressure and Sr-substitution

Katano, Susumu; Mori, Nobuo*; Ueda, Yutaka*; Fernandez-Baca, J. A.*; Funahashi, Satoru

Physica C, 235-240, p.837 - 838, 1994/00

https://doi.org/10.1016/0921-4534(94)91643-8

Times Cited Count：0 Percentile：0.01(Physics, Applied)

no abstracts in English

Journal Articles

Pressure effects on the structural phase transitions and superconductivity of La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ (x=0.125)

Katano, Susumu; Funahashi, Satoru; Mori, Nobuo*; Ueda, Yutaka*; Fernandez-Baca, J. A.*

Physical Review B, 48(9), p.6569 - 6574, 1993/09

https://doi.org/10.1103/PhysRevB.48.6569

Times Cited Count：35 Percentile：84.07(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

Crystal structure of La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ ; Effects of Ba substitution and pressure

Katano, Susumu; Funahashi, Satoru; Fernandez-Baca, J. A.*; Mori, Nobuo*; Ueda, Yutaka*; Koga, Keiichi*

JAERI-M 93-131, 45 Pages, 1993/07

JAERI-M-93-131.pdf:1.07MB

no abstracts in English

Journal Articles

Pressure induced successive magnetic phase transitions in Pr $_{2}$ CuO $_{4-y}$

Katano, Susumu; R.M.Nicklow*; Funahashi, Satoru; Mori, Nobuo*; *; Akimitsu, Jun*

Physica C, 215, p.92 - 96, 1993/00

https://doi.org/10.1016/0921-4534(93)90368-Z

Times Cited Count：5 Percentile：34.09(Physics, Applied)

no abstracts in English

Journal Articles

Pressure effect on the antiferromagnetism in La $_{2}$ CuO $_{4-y}$

Katano, Susumu; Mori, Nobuo*; *; *

Journal of the Physical Society of Japan, 58(11), p.3890 - 3893, 1989/11

https://doi.org/10.1143/JPSJ.58.3890

Times Cited Count：14 Percentile：76.46(Physics, Multidisciplinary)

no abstracts in English

JAEA Reports

Effects of Pressure on the First Order Phase Transition of CU $_{4}$ SnS $_{4}$ and CU $_{8}$ GeS $_{6}$

*; Ozawa, K.

JAERI-M 84-059, 28 Pages, 1984/03

JAERI-M-84-059.pdf:0.99MB

no abstracts in English

Journal Articles

Synthesis of high-molecular-weight polymer of methyl chloride salt of n,n-dimethylaminoethyl methacrylate by radiation-induced polymerization at high pressure

; *; Sasuga, Tsuneo; Takehisa, Masaaki; Machi, Sueo

J.Appl.Polym.Sci., 26, p.741 - 742, 1981/00

https://doi.org/10.1002/app.1981.070260231

Times Cited Count：1 Percentile：18.78(Polymer Science)

no abstracts in English

Journal Articles

Effect of high pressure on radiation-induced cross-linking of synthetic rubbers

Sasuga, Tsuneo; Takehisa, Masaaki

J.Macromol.Sci.,Part B, 11(3), p.389 - 401, 1975/03

no abstracts in English

Journal Articles

Pressure Effects on Improper Ferroelectrics

Bussei Kenkyu, 22(4), p.387 - 391, 1974/04

no abstracts in English

Presentation/Publication Type

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Keyword

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Held year of conference

Anharmonicity of platinum under HP and HT

Experimental determination of the mechanism of the tunneling diffusion of H atoms in solid hydrogen; Physical exchange versus chemical reaction

Pressure effect on antiferromagnetic ordering in UPb

Anharmonicity of gold under high-pressure and high-temperature

The Pressure effect on the recombination and relaxation of hydrogen atoms in solid hydrogen

Separation of metals using supercritical carbon dioxide as extraction medium

Pressure effects on spin-gap and antiferromagnetism in the hole-doped spin ladder system Sr $_{2.5}$ Ca $_{11.5}$ Cu $_{24}$ O $_{41}$

Scaling behavior in the Ce-based Kondo semiconductors; NQR/NMR measurements of CeRhSb and CeNiSn under high pressures

Pressure effects of the magnetic structures of TbNi $_{2}$ Si $_{2}$ in external fields

Pressure effects on the dimerization in the spin-Peierls state of CuGeO $_{3}$

Effect of pressure on T $_{c}$ in La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ with x=0.125

Structural phase transitions and superconductivity of La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ with x=0.125; Effects of pressure and Sr-substitution

Pressure effects on the structural phase transitions and superconductivity of La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ (x=0.125)

Crystal structure of La $_{2-x}$ Ba $_{x}$ CuO $_{4}$ ; Effects of Ba substitution and pressure

Pressure induced successive magnetic phase transitions in Pr $_{2}$ CuO $_{4-y}$

Pressure effect on the antiferromagnetism in La $_{2}$ CuO $_{4-y}$

Effects of Pressure on the First Order Phase Transition of CU $_{4}$ SnS $_{4}$ and CU $_{8}$ GeS $_{6}$

Synthesis of high-molecular-weight polymer of methyl chloride salt of n,n-dimethylaminoethyl methacrylate by radiation-induced polymerization at high pressure

Effect of high pressure on radiation-induced cross-linking of synthetic rubbers

Pressure Effects on Improper Ferroelectrics