2014 Fiscal Year Final Research Report
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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| 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 |
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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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| Free Research Field |
数物系科学
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