2016 Fiscal Year Final Research Report
Optical magnetoelectric effect in ferroelectric ferromagnet boracite
| 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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| Keywords | マルチフェロイクス / 電気磁気効果 / ドメイン |
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| 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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| Free Research Field |
物質科学
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