Temperature dependence of the magnetic specific heat on spin-glass system
| Project/Area Number |
23540393
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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 | Kagoshima University |
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Principal Investigator |
ITO Masakazu 鹿児島大学, 理工学研究科, 准教授 (40294524)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | スピングラス / フラストレーション / ホイスラー化合物 / 硫化スピネル / 比熱 / 熱伝導 / 熱電能 / ホイスラー / スピネル / 電気抵抗率 / 熱伝導率 / ゼーベック係数 / 無次元性能指数 / ハーフメタル / 磁化 / 圧力 |
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| Outline of Final Research Achievements |
Spinel and Heusler compounds with spin-glass freezing were investigated by means of thermodynamically. Ferri-magnetism FeCr2S4 has an orbital-ordered (OO) phase. The magnetic new phase induced by magnetic field was found out in the OO phase. The enhancement of the spin-freezing temperature by applying pressure was observed. This enhancement might due to the increasing of the strength of the magnetic frustration came from the spinel-crystal structure. For Heusler Ru2-xFexCrSi, the concentration x dependence of the density of states for the majority- and minority-spin band at Fermi level was determined using the results of specific heat and Andreev-refraction measurements.
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Report
(5 results)
Research Products
(53 results)
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[Journal Article] Effects of Geometrical Spin Frustration on Triangular Spin Tubes Formed in CsCrF4 and α-KCrF42011
Author(s)
H. MANAKA, T. ETOH, Y. HONDA, N. IWASHITA, K. OGATA, N. TERADA, T. HISAMATSU, M. ITO, Y. NARUMI1, A. KONDO, K. KINDO, Y. MIURA
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Journal Title
Journal of the Physical Society of Japan
Volume: 80
NAID
Related Report
Peer Reviewed
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[Presentation] Fe2Mn1-xVxSi の磁気相図2014
Author(s)
西涼太, 田底知也,佐野紘晃, 重田出, 伊藤昌和, 小山佳一, 近藤晃弘,金道浩一, 廣井政彦
Organizer
日本物理学会九州支部会
Place of Presentation
熊本県熊本市 崇城大学
Year and Date
2014-12-06
Related Report
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[Presentation] 硫化スピネルCuIrRhS4の熱電特性2014
Author(s)
伊藤昌和、戎 修二、永田正一
Organizer
第11回日本熱電学会学術講演会（TSJ2014)
Place of Presentation
茨城県つくば市 独立行政法人物質・材料研究機構
Year and Date
2014-09-29 – 2014-09-30
Related Report
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