Study of magnetic frustration in the lithium-substituted rare-earth compounds
| Project/Area Number |
24540359
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Saitama University |
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Principal Investigator |
KOSAKA Masashi 埼玉大学, 理工学研究科, 准教授 (20302507)
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| Co-Investigator(Renkei-kenkyūsha) |
MICHIMURA Shinji 埼玉大学, 科学分析支援センター, 助教 (40552310)
OHOYAMA Kenji 東北大学, 金属材料研究所, 准教授 (60241569)
NAKANISHI Yoshiki 岩手大学, 大学院工学研究科, 准教授 (70322964)
HIGEMOTO Wataru 独立行政法人日本原子力開発機構, 先端基礎研究センター, 研究主幹 (90291103)
KITO Hijiri 独立行政法人産業技術総合研究所, 電子光技術研究部門, 主任研究員 (30356886)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 強相関電子系 / 磁性 / フラストレーション / 低温物性 / 希土類金属間化合物 |
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| Outline of Final Research Achievements |
We found that the intermetallic compound Yb5Ge4 indicates the development of short-range correlations caused by magnetic frustration. Yb5Ge4 is the mother material of Yb4LiGe4, which is designed to reinforce the magnetic frustration effects performed by the Li-substitution. The diffraction anomalous fine structure method (DAFS), X-ray structural technique, reveals one of three crystallographic sites of Yb ions occupies the Yb3+ state and the other sites are in the Yb2+ state. The valence-ordered state already realizes at room temperatures, therefore, the low-dimensional magnetic network has been formed by Yb3+ ions. The anomalous behaviors in the temperature dependences of magnetization and specific heat of Yb5Ge4 are due to the development of short-range magnetic correlations, which arises from low-dimensionality effects of magnetic interactions.
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Report
(4 results)
Research Products
(19 results)
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[Presentation] 正方晶Yb2MgSi2の半導体的振舞いと磁性2014
Author(s)
沼倉凌介, 小坂昌史, 道村真司, 片野進, 中島大輔, 野中良順, 若林裕助, 寺島拓, 松田康弘, 太田寛人, 香取浩子
Organizer
日本物理学会
Place of Presentation
中部大学 春日井キャンパス（愛知県・春日井市）
Year and Date
2014-09-07 – 2014-09-10
Related Report
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[Presentation] 磁性半導体Yb5Ge4の圧力効果と水素化2014
Author(s)
切金大介, 沼倉凌介, 町田阿弓, 小坂昌史, 道村真司, 片野進, 工藤駆, 酒井政道
Organizer
日本物理学会
Place of Presentation
中部大学 春日井キャンパス（愛知県・春日井市）
Year and Date
2014-09-07 – 2014-09-10
Related Report
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[Presentation] 正方晶R2MgSi2(R=Yb, Tm, Er)の電気抵抗2014
Author(s)
沼倉凌介, 小坂昌史, 道村真司, 片野進, 中島大輔, 野中良順, 若林裕助, 寺島拓, 松田康弘, 太田寛人, 香取浩子
Organizer
日本物理学会
Place of Presentation
中部大学 春日井キャンパス（愛知県・春日井市）
Year and Date
2014-09-07 – 2014-09-10
Related Report
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[Presentation] Ferromagnetic ordering of ternary compound YbPtP2014
Author(s)
S. Michimura, Y. Hatanaka, R. Numakura, C. Motai, S. Katano, M. Kosaka
Organizer
International Conference on Strongly Correlated Electron Systems (SCES 2014)
Place of Presentation
フランス, グルノーブル、サン マルタン デール学園都市
Year and Date
2014-07-07 – 2014-07-11
Related Report
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