High pressure studies on the switching mechanism of the ground state in uranium 5f system
Project/Area Number |
25400386
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
|
Research Institution | Japan Atomic Energy Agency |
Principal Investigator |
Tateiwa Naoyuki 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究主幹 (50346821)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | ウラン化合物 / 高圧実験 / 強磁性超伝導 / 磁性 / 臨界現象 |
Outline of Final Research Achievements |
The purpose of the present project is to study the change of the electric state associated with pressure-induced phase transition in uranium compounds. We also study the physical property of the 5f electron system around magnetic to non-magnetic phase boundary. In addition, the development of high-pressure cell is planed. We find new critical scaling law of magnetization around the ferromagnetic transition temperature in UGe2 and URhGe. We improve the performance of miniature ceramic anvil cell mCAC for magnetic measurements under high pressure. We reduce background magnetization in mCAC by changing cell design. With this improvement, we have studied pressure-induced ferromagnetic in b-US2 and YbCu2Si2. In b-US2, the insulator-metal transition occurs around 4 GPa. We have found the strong ferromagnetic phase is induced in the metallic phase. The ferromagnetic properties in the pressure-induced phase are determined in YbCu2Si2.
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Report
(4 results)
Research Products
(49 results)
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[Journal Article] Properties and Collapse of the Ferromagnetism in UCo1-xRuxAl Studied in Single Crystals2016
Author(s)
Pospisil, Jiri Opletal, Petr Valiska, Michal Tokunaga, Yo Stunault, Anne Haga, Yoshinori Tateiwa, Naoyuki Gillon, Beatrice Honda, Fuminori Yamamura, Tomoo Niznansky, Vojtech Yamamoto, Etsuji Aoki, Dai
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Journal Title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume: 85
Issue: 3
Pages: 034710-034710
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Heavy fermions and unconventional superconductivity in high-quality single crystals of rare-earth and actinide compounds2013
Author(s)
Y. Onuki, R. Settai, K. Sugiyama, T. Takeuchi, F. Honda, Y. Haga, E. Yamamoto, T. D. Matsuda, N. Tateiwa, D. Aoki,
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Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume: 63
Issue: 3
Pages: 409-415
DOI
Related Report
Peer Reviewed
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[Presentation] 角度分解光電子分光によるThRu2Si2の電子状態2015
Author(s)
藤森伸一, 小畠雅明, 竹田幸治, 岡根哲夫, 斎藤祐児, 藤森淳, 山上浩志, 松本裕司, 山本悦嗣, 立岩尚之, 芳賀芳範
Organizer
日本物理学会第70回年次大会
Place of Presentation
早稲田大学(東京都新宿区)
Year and Date
2015-03-21 – 2015-03-24
Related Report
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[Presentation] UT2Al20(T:遷移金属)の物質探索と電子状態2014
Author(s)
芳賀芳範, 松本裕司, 立岩尚之, 山本悦嗣, Z. Fisk, 播磨尚朝, 本間佳哉, 本多史憲, 青木大
Organizer
日本物理学会 2014年秋季大会
Place of Presentation
中部大学(愛知県春日井市)
Year and Date
2014-09-07 – 2014-09-10
Related Report
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[Presentation] U3Pd20Si6の磁場中弾性応答 II2014
Author(s)
日浦健太, 柳澤達也, 門別翔太, 村住太郎, 稲垣宏幸, 日高宏之, 網塚浩, 立岩尚之, 芳賀芳範
Organizer
日本物理学会 2014年秋季大会
Place of Presentation
中部大学(愛知県春日井市)
Year and Date
2014-09-07 – 2014-09-10
Related Report
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