| Project/Area Number |
23656438
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural/Functional materials
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
TAKAHASHI Yukiko 独立行政法人物質・材料研究機構, 磁性材料ユニット, 主幹研究員 (50421392)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | スピンフィルター / スピンフィルター効果 / 強磁性絶縁体 / Ｃｏフェライト / スピンフィルタ |
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| Research Abstract |
The purpose of this work is to realize the high efficiency spin injection to Si at RT by applying the spin-filter effect of Co ferrite. Two kinds of oxidation method, radical and ozone, were tried to obtain high quality Co ferrite without antiphase boundaries(APB) and oxygen defects which act as the hopping sites for electron conduction. It was found that the number of the density of APBs and defects in the Co ferrite made by the radial and ozone are similar to that by the thermal oxidation and the spin-filter effect at RT was quite low compared with that at 10 K.
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