Electrical control of optical properties in ferromagnetic materials
| Project/Area Number |
25887016
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOYAMA Tomohiro 東京大学, 工学(系)研究科(研究院), 助教 (60707537)
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| Project Period (FY) |
2013-08-30 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | スピントロニクス / 磁性の電界制御 / 磁気光学効果 / 強磁性相転移 / ファラデー効果 |
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| Outline of Final Research Achievements |
The goal of this work is the control of the optical properties of the ferromagnetic materials by electric field effect. In the first year, we have set up a measurement system and succeeded in depositing cobalt ultra-thin film on a commercially available glass substrate. In the second year, we have optimized the condition of the film deposition. Then, we have started measuring the electric field effect using the optical measurement system. As a result, we have observed clear change in the magnetic properties at room temperature. This suggests that the Faraday effect in cobalt thin film can be tuned by the electric field effect.
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Report
(3 results)
Research Products
(23 results)
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[Journal Article] Operating principle of a three-terminal domain wall device with perpendicularly magnetized Ta/CoFeB/MgO free layer and underlying hard magnets2014
Author(s)
H. Tanigawa, T. Suzuki, K. Suemitsu, N. Ohshima, T. Kitamura, T. Ohkochi, M. Kotsugi, T. Kinoshita, T. Koyama, D. Chiba, Y. Yoshimura, K. Ueda, T. Ono, and E. Kariyada
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Journal Title
Japanese Journal of Applied Physics
Volume: 53
Issue: 6
Pages: 0630021-7
DOI
NAID
Related Report
Peer Reviewed
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