| Project/Area Number |
26800167
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ABE NOBUYUKI 東京大学, 大学院新領域創成科学研究科, 助教 (70582005)
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| Research Collaborator |
TOYODA Shingo
Nguyen Duy Khanh
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | マルチフェロイクス / 電気磁気効果 / ドメイン / 光学的電気磁気効果 / 分域構造 / 光吸収 / 方向二色性 / 磁性強誘電体 / 光物性 / 単結晶育成 |
|---|
| Outline of Final Research Achievements |
Directional dichroism in a well-known magnetoelectric multiferroic boracite has been investigated. In the ferroelectric and weak ferromagnetic phase, we have found that the optical absorption of intra d-d transitions exhibits a fairly large directional dichroism, which shows up as a change in absorption by the application of a magnetic field. Especially, in the case of Co3B7O13I, magnetic-field dependence of the optical absorption shows a hysteresis like the magnetization curve, which indicates that the change in optical absorption should originate from the rotation of the magnetic moments of Co2+.
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