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コバルトドーピングされた二酸化チタンの室温での電気誘発性鉄磁気は,コバルトドーピングされた二酸化チタンの室温での電気誘発性鉄磁気です
1Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
Science (New York, N.Y.)
|May 28, 2011
まとめ
電場効果を用いて (Ti,Co) O(2) に室温のフェロマグネチズムを誘導した. これは,高温半導体スピントロニクスと磁気スイッチング技術の実現可能な経路を示しています.
科学分野:
- 凝縮物質物理学 凝縮物質物理学
- マテリアルサイエンス 材料科学
- 半導体物理学 半導体物理学
背景:
- 鉄磁性半導体における電場効果は,磁化スイッチングを可能にする,スピントロニックアプリケーションにとって極めて重要です.
- 半導体における室温フェロマグネティズムを達成することは,実践的なスピントロニクスにとって重要な課題です.
研究 の 目的:
- 磁気酸化物半導体内の室温で電場誘発の鉄磁性を実証する.
- 高温フェロマグネティズムにおける電子媒体の役割を調査する.
- 室温半導体スピントロニクスへの道を確立するために.
主な方法:
- (Ti,Co) O (((2) 磁性酸化物半導体で電動二層ゲートを使用した.
- 10^14cm^-2.2を超える高密度の電子の蓄積を達成しました.
- 数ボルトのゲート電圧を適用して,材料の磁気状態を調節する.
主要な成果:
- 室温で電場誘発のフェロマグネチズムを実証した.
- 低キャリアのパラマグネティック状態を高キャリアのフェロマグネティック状態に変換した.
- 高温フェロマグネティズムを可能にするために電子運搬体の重要な役割を示しました.
結論:
- 電場誘発のフェロマグネチズムは, (Ti,Co) O ((2)) で室温で達成可能である.
- 電子媒体は,高温フェロマグネティズムにおいて重要な役割を果たします.
- この研究は,室温半導体スピントロニクスに対する有望なアプローチを示しています.
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