2013 Fiscal Year Final Research Report
Study of multiferroic domain wall dynamics towards high-speed operation of magnetoferroelectric devices
| Project/Area Number |
24684020
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | Institute of Physical and Chemical Research (2013)
The University of Tokyo (2012) |
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Principal Investigator |
KAGAWA Fumitaka 独立行政法人理化学研究所, 創発物性科学研究センター, ユニットリーダー (30598983)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | マルチフェロイック / ドメイン壁 / 誘電スペクトロスコピー / ぺロフスカイト / 有機導体 / 電荷秩序 / スキルミオン |
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| Research Abstract |
I studied topological textures such as domain walls and skyrmion (spin-swirling object) in magneto ferroelectrics, called multiferroics, where magnetic order and ferroelectricity coexists, to operate them at a fast rate. I focused on a multiferroic, Cu2OSeO3, which host the skyrmion and succeeded in detecting a high-speed magnetoelectric effect. I measured microwave transmittance in detail and observed a phenomenon in which microwave absorption depends on the incident direction of microwaves. This effect is known as a directional dichroism and a first experimental observation in a microwave regime.
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