| Project/Area Number |
12440089
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
固体物性Ⅰ(光物性・半導体・誘電体)
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| Research Institution | Osaka University |
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Principal Investigator |
KATAYAMA Hiroshi Osaka University, Institute of Scientific and Industrial Research, Professor, 産業科学研究所, 教授 (30133929)
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| Co-Investigator(Kenkyū-buntansha) |
SHIRAI Koun Osaka University, Institute of Scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (60178647)
HARIMA Hisatomo Osaka University, Institute of Scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (50211496)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2002: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2001: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | Ab initio calculation / Transparent magnetic semiconductors / Valence control of Curie temperature / materials design / zinc oxide / Transition metal impurity / Spintronics / 酸化亜鉛 / 物質設計 / 透明強磁性体 / スピントロニクス / ハーフメタル / 強磁性半導体 / スピングラス / スピンFET / 磁性半導体 / 抵抵抗p型化 / 同時ドーピング / 補償機構 |
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| Research Abstract |
Based upon ab initio electronic structure calculation, we have proposed new valence control method for the low-resistive p-type transparent ZnO and materials design for the fabrication of transparent half-metallic ferromagnetism of 3d transition metal doped ZnO. We have proposed guideline to stabilize the ferromagnetic states based upon the total energy calculation of spin-glass state and ferromagnetic state with doping. Based upon the calculated data base for the doping dependence on transparent ferromagnets, we have designed new devices of photo-induced ferromagnetic semiconductors. We have also designed brain-type memory and brain-type processor for the application of semiconductor spintronics and new devices by using the spin-glass to ferromagnetic transition.
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