書誌事項
- タイトル別名
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- Fabrication of a Spin-filter Device with Co Ferrite
- Co フェライト オ モチイタ スピンフィルタ ソシ ノ サクセイ
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A magnetic tunnel junction (MTJ) spin-filter device of Pt/Co ferrite/MgO/Co demonstrated -19.8 % tunnel magnetoresistance (TMR) and 27.5% spin-filter efficiency at 10 K. By increasing the bias voltage, the TMR at 10 K first increased and then decreased, exhibiting a maximum at 0.17 V. This anomalous dependence of TMR on bias was interpreted as tunneling via the spin-down conduction band in the Co ferrite. At room temperature (RT), the tunneling mechanism was thought to originate from hopping in the defect states due to structural and chemical defects in the Co ferrite. To achieve higher spin-filter effect at RT, it is important to reduce the defects in the Co ferrite barrier.
収録刊行物
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- Journal of the Magnetics Society of Japan
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Journal of the Magnetics Society of Japan 34 (2), 96-99, 2010
公益社団法人 日本磁気学会
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詳細情報 詳細情報について
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- CRID
- 1390001205286139904
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- NII論文ID
- 130000168425
- 10030479976
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- NII書誌ID
- AA12297999
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- ISSN
- 18822932
- 18822924
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- NDL書誌ID
- 10609935
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可