JOPSS - Search Results

Journal Articles

Uranium-plutonium-oxygen phase diagram; Investigating the solvus of fluorite's exsolution

Vauchy, R.; Hirooka, Shun; Horii, Yuta; Ogasawara, Masahiro*; Sunaoshi, Takeo*; Yamada, Tadahisa*; Tamura, Tetsuya*; Murakami, Tatsutoshi

Journal of Nuclear Materials, 599, p.155233_1 - 155233_11, 2024/10

https://doi.org/10.1016/j.jnucmat.2024.155233

Times Cited Count：1 Percentile：35.03(Materials Science, Multidisciplinary)

The fluorite exsolution/recombination in U $_{1-y}$ Pu $_{y}$ O $_{2-x}$ (y = 0.30 and 0.45) and PuO $_{2-x}$ was investigated using differential scanning calorimetry. The results are in relatively good agreement with the literature data, except for plutonia. Our values indicate that the critical temperature of the miscibility gap in Pu-O is 3050 K lower than previously reported. Finally, the systematic experimental procedure allowed us refining the locus of the solvus existing in hypostoichiometric U $_{0.70}$ 0Pu $_{0.30}$ O $_{2-x}$ , U $_{0.55}$ Pu $_{0.45}$ O $_{2-x}$ , and PuO $_{2-x}$ dioxides.

Journal Articles

Heavy ion acceleration plan at J-PARC

Miake, Yasuo

JPS Conference Proceedings (Internet), 33, p.011114_1 - 011114_8, 2021/03

https://doi.org/10.7566/JPSCP.33.011114

Having the QGP formation confirmed at RHIC and LHC, the next step of the research is to look for the critical end point and the first order phase boundary. For this purpose, new heavy ion acceleration schema to obtain 10 AGeV heavy ion beam has been proposed in Germany, Russia, China and Japan. Unlike at the RHIC 200 GeV and LHC, the heavy ion collisions of 10 AGeV region, the matter should have larger , and we may reach the region of the interest. J-PARC is the high intensity proton accelerator at the energy of 30 GeV. With an additional heavy ion injector, high intensity heavy ion beams can be obtained. Superior performance of the J-PARC-HI scheme and proposed experiments are discussed.

Journal Articles

Single-crystal growth and magnetic phase diagram of the enantiopure crystal of NdPtB

Sato, Yoshiki*; Honda, Fuminori*; Maurya, A.*; Shimizu, Yusei*; Nakamura, Ai*; Homma, Yoshiya*; Li, D.*; Haga, Yoshinori; Aoki, Dai*

Physical Review Materials (Internet), 5(3), p.034411_1 - 034411_9, 2021/03

https://doi.org/10.1103/PhysRevMaterials.5.034411

Times Cited Count：3 Percentile：11.66(Materials Science, Multidisciplinary)

Journal Articles

Experimental determination of the topological phase diagram in Cerium monopnictides

Kuroda, Kenta*; Ochi, Masayuki*; Suzuki, Hiroyuki*; Hirayama, Motoaki*; Nakayama, Mitsuhiro*; Noguchi, Ryo*; Bareille, C.*; Akebi, Shuntaro*; Kunisada, So*; Muro, Takayuki*; et al.

Physical Review Letters, 120(8), p.086402_1 - 086402_6, 2018/02

https://doi.org/10.1103/PhysRevLett.120.086402

Times Cited Count：62 Percentile：91.77(Physics, Multidisciplinary)

Journal Articles

Phase diagram of the Eu-H system at high temperatures and high hydrogen pressures

Saito, Hiroyuki; Machida, Akihiko; Matsuoka, Takehiro*; Aoki, Katsutoshi*

Solid State Communications, 205, p.24 - 27, 2015/03

https://doi.org/10.1016/j.ssc.2014.12.019

Times Cited Count：9 Percentile：35.83(Physics, Condensed Matter)

Journal Articles

Antiferromagnetic and ferromagnetic phases of UCuSi

Matsuda, Tatsuma; Haga, Yoshinori; Ikeda, Shugo; Galatanu, A.; Onuki, Yoshichika

Physica B; Condensed Matter, 359-361, p.1069 - 1071, 2005/04

https://doi.org/10.1016/j.physb.2005.01.289

Times Cited Count：3 Percentile：16.17(Physics, Condensed Matter)

We have succeeded in growing a high-quality single crystal of UCuSi with the tetragonal structure by the Sn-flux method and measured the magnetic susceptibility and magnetization. UCuSi is confirmed to order antiferromagnetically below $T_{rm N}$ = 106 K, and follows a successive ferromagnetic ordering at $T_{rm C}$ = 100 K. The magnetic properties are highly anisotropic, reflecting the crystal structure. An easy-axis of magnetization is found to be the [001] direction (-axis), while the [100] direction (-axis) corresponds to the hard-axis in magnetization. The saturation moment is determined as 1.8 $mu_{rm B}$ /U.

Journal Articles

Phase relations of AgI under high pressure and high temperature

Otaka, Osamu*; Takebe, Hitoshi*; Yoshiasa, Akira*; Fukui, Hiroshi*; Katayama, Yoshinori

Solid State Communications, 123(5), p.213 - 216, 2002/08

https://doi.org/10.1016/S0038-1098(02)00290-9

Times Cited Count：19 Percentile：64.67(Physics, Condensed Matter)

Using a multi-anvil high-pressure device and synchrotron radiation, X-ray observations of AgI high pressure and high temperature up to 6.0 GPa and 1000 K have been performed to investigate the phase relations between -AgI, rocksalt-type, disordered rocksalt-type, and liquid phases. The three phases of -AgI, disordered rocksalt-type, and liquid meet in a triple point in the vicinity of 823 K and 1.3 GPa. The melting curve of the disordered rocksalt phase is linear with a positive slope. The transition between rocksalt and the disordered rocksalt phases is a broad and diffuse disordering type within the same structure. The formation of the disordered rocksalt phase has been hence estimated with the variation of a relative intensity ratio of (111) and (200) diffraction from the rocksalt phase. With increasing pressure the rocksalt phase becomes stabel at high temperature. At 6.0 GPa the rocksalt phase directly melts without the transition to the disordered rocksalt phase.

Journal Articles

Phase diagram of the neodymium chloride-sodium chloride system

Sato, Tadashi; Ogawa, Toru

J. Thermal Anal., 52, p.363 - 371, 1998/00

https://doi.org/10.1023/A:1010157809182

Times Cited Count：6 Percentile：35.41(Thermodynamics)

no abstracts in English

Journal Articles

Thermodynamic assessment of the Fe-U,U-Zr and Fe-U-Zr systems

; ; ; Ogawa, Toru

Journal of Alloys and Compounds, 271-273, p.636 - 640, 1998/00

https://doi.org/10.1016/S0925-8388(98)00176-5

Times Cited Count：64 Percentile：91.41(Chemistry, Physical)

no abstracts in English

Journal Articles

The Investigation of selected Np-Zr alloys by X-ray diffraction up to 700 $^{circ}$ C

Okamoto, Yoshihiro; R.G.Haire*; J.K.Gibson*; Ogawa, Toru

Journal of Alloys and Compounds, 232, p.302 - 306, 1996/00

https://doi.org/10.1016/0925-8388(95)02009-8

Times Cited Count：8 Percentile：55.80(Chemistry, Physical)

no abstracts in English

JAEA Reports

Thermodynamic calculations for chemical vapor deposition of silicon carbide using ehyltrichlorosilane

Nakano, Junichi; Yamada, Reiji

JAERI-Research 95-045, 26 Pages, 1995/06

JAERI-Research-95-045.pdf:1.08MB

no abstracts in English

Journal Articles

Thermodynamic analysis of Zr-U and Zr-Np alloys in view of f-d interaction

Ogawa, Toru; J.K.Gibson*; R.G.Haire*; M.M.Gensini*; Akabori, Mitsuo

Journal of Nuclear Materials, 223, p.67 - 71, 1995/00

https://doi.org/10.1016/0022-3115(95)00002-X

Times Cited Count：15 Percentile：78.66(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Thermodynamic properties and multiphase diffusion paths of the ternary system U-Zr-N

Ogawa, Toru; Akabori, Mitsuo

Journal of Alloys and Compounds, 213-214, p.173 - 177, 1994/00

https://doi.org/10.1016/0925-8388(94)90899-0

Times Cited Count：10 Percentile：61.96(Chemistry, Physical)

no abstracts in English

Journal Articles

Investigation of the Pu-U phase diagram

Okamoto, Yoshihiro; Maeda, Atsushi; ; Omichi, Toshihiko

Journal of Alloys and Compounds, 213-214, p.372 - 374, 1994/00

https://doi.org/10.1016/0925-8388(94)90935-0

Times Cited Count：14 Percentile：69.96(Chemistry, Physical)

no abstracts in English

Journal Articles

Neptunium-iron phase diagram

J.K.Gibson*; R.G.Haire*; E.C.Beahm*; M.M.Gensini*; Maeda, Atsushi; Ogawa, Toru

Journal of Nuclear Materials, 211, p.215 - 222, 1994/00

https://doi.org/10.1016/0022-3115(94)90349-2

Times Cited Count：9 Percentile：62.76(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Alloying behaviour among U, Np, Pu and Am predicted with the Brewer valence-bond model

Ogawa, Toru

Journal of Alloys and Compounds, 194, p.1 - 7, 1993/00

https://doi.org/10.1016/0925-8388(93)90636-2

Times Cited Count：30 Percentile：86.39(Chemistry, Physical)

no abstracts in English

Journal Articles

On the randomness of a transverse field for the Ising model

Physics Letters A, 171, p.134 - 136, 1992/11

https://doi.org/10.1016/0375-9601(92)90146-D

Times Cited Count：9 Percentile：59.17(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Thermochemical modelling of U-Zr alloys

Ogawa, Toru; Iwai, Takashi

J. Less-Common Met., 170, p.101 - 108, 1991/00

no abstracts in English

Journal Articles

Phase diagram for the infinite-range transverse Ising spin-glass model

Physical Review B, 40(13), p.9321 - 9323, 1989/11

https://doi.org/10.1103/PhysRevB.40.9321

Times Cited Count：17 Percentile：70.23(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

Estimation of thermodynamic properties of alloys from phase diagram and other weak boundary conditions

Ogawa, Toru; Iwai, Takashi

JAERI-M 89-063, 46 Pages, 1989/05

JAERI-M-89-063.pdf:1.1MB

no abstracts in English

Presentation/Publication Type

Journal/Book Title

Meeting title

First Author

Keyword

Language

Publication Year

Held year of conference

Uranium-plutonium-oxygen phase diagram; Investigating the solvus of fluorite's exsolution

Heavy ion acceleration plan at J-PARC

Single-crystal growth and magnetic phase diagram of the enantiopure crystal of NdPtB

Experimental determination of the topological phase diagram in Cerium monopnictides

Phase diagram of the Eu-H system at high temperatures and high hydrogen pressures

Antiferromagnetic and ferromagnetic phases of UCuSi

Phase relations of AgI under high pressure and high temperature

Phase diagram of the neodymium chloride-sodium chloride system

Thermodynamic assessment of the Fe-U,U-Zr and Fe-U-Zr systems

The Investigation of selected Np-Zr alloys by X-ray diffraction up to 700 $^{circ}$ C

Thermodynamic calculations for chemical vapor deposition of silicon carbide using ehyltrichlorosilane

Thermodynamic analysis of Zr-U and Zr-Np alloys in view of f-d interaction

Thermodynamic properties and multiphase diffusion paths of the ternary system U-Zr-N

Investigation of the Pu-U phase diagram

Neptunium-iron phase diagram

Alloying behaviour among U, Np, Pu and Am predicted with the Brewer valence-bond model

On the randomness of a transverse field for the Ising model

Thermochemical modelling of U-Zr alloys

Phase diagram for the infinite-range transverse Ising spin-glass model

Estimation of thermodynamic properties of alloys from phase diagram and other weak boundary conditions