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
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
|
Research Institution | Muroran Institute of Technology |
Principal Investigator |
EBISU Shuji 室蘭工業大学, 工学(系)研究科(研究院), 教授 (10250523)
|
Project Period (FY) |
2011 – 2013
|
Project Status |
Completed (Fiscal Year 2013)
|
Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
|
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 / 磁気相転移 / 磁気冷却効果 / 磁化容易方向制御 / 磁場中比熱 / 巨大磁気ヒステリシス / ホール係数 |
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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Report
(4 results)
Research Products
(43 results)