2013 Fiscal Year Final Research Report
Gigantic responses of physical properties in rare-earth sesquisulfides arising from metastable multiple magnetic structures and its control using external fields or environmental factors
| Project/Area Number |
23540384
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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 | Muroran Institute of Technology |
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Principal Investigator |
EBISU Shuji 室蘭工業大学, 工学(系)研究科(研究院), 教授 (10250523)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 希土類硫化物 / 単結晶 / 逐次磁気相転移 / 異常磁気伝導 / 磁気熱量効果 / ゼーベック係数 / 磁気相制御 / 巨大物性応答 |
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| Research Abstract |
I have grown single crystals of alpha type rare-earth sesquisulfides having an orthorhombic crystal structure and clarified that the physical properties of these single crystals occasionally demonstrate steep or gigantic responses to temperature, magnitude or direction of magnetic field and electrical field in low temperatures below about 10 K through the measurements of magnetization, electrical resistivity, Seebeck coefficient and specific heat. I am convinced these phenomena originate from metastable multiple structures in the present matter; therefore, I aimed for control of physical properties via controlling magnetic phase using external fields or environmental factors and consequently succeeded in revealing novel magnetic phase in single crystal of dysprosium sesquisulfide alpha-Dy2S3 by contriving application-procedure of magnetic field.
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