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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
可能な分子ベースのマルチフェロイン:トリエチルメチラモニウムテトラブロモフェラート (III) の室温以上の磁気流電結合です
Hong-Ling Cai1, Yi Zhang, Da-Wei Fu
1Ordered Matter Science Research Center, Southeast University, Nanjing, PR China.
Journal of the American Chemical Society
|October 31, 2012
まとめ
新しい分子マルチフェロ材料であるトライエチルメチラモニウムテトラブロモフェラート (III) は,室温以上で鉄電気および磁気移行を示す. これは,高度な電子アプリケーションの重要な特性である重要な磁気電気結合につながります.
科学分野:
- マテリアルサイエンス 材料科学
- 固体物理 固体物理学
- 化学 化学は化学です.
背景:
- 同時に鉄電気と磁気による秩序を呈するマルチフェロ材料は,新しい電子機器にとって非常に興味深いものです.
- 室温に近い相変化を持つ材料を発見することは,実用的な応用において極めて重要です.
- 分子マルチフェロインは,調性および加工において潜在的な利点を提供します.
研究 の 目的:
- 新しい分子マルチフェロ材料の発見を報告するために.
- トライエチルメチラモニウムテトラブロモフェラート (TETRABROMOFERATE) の鉄電気および磁気特性を調査する.
- 材料の磁気流電結合と相変遷を特徴付けるため.
主な方法:
- トライエチルメチラモニウムテトラブロモフェラート (III) の合成と特徴づけ
- 温度に依存する介電および磁気測定.
- 段階移行の行動と磁気流電反応の分析.
主要な成果:
- 室温以上の分子マルチフェロイド,トリエチルメチラモニウムテトラブロモフェラート (III) (1) が発見されました.
- 鉄電気と磁気相変遷は360K近くで発生し,強力な磁気流電結合 (0.6MHzで18%) を示しています.
- 171 Kの低温の鉄電-鉄電の移行が観測され,わずかな磁気および介電的異常が観察されました.
結論:
- トライエチルメチラモニウムテトラブロモフェラート (TETRABROMOFERATE) は,室温以上の分子マルチフェロリックスに有望な候補である.
- 室温に近い強力な磁気流電結合は,センサーやメモリデバイスでの応用の可能性を強調しています.
- 物質の複雑な相変化の振る舞いは,さらなる調査を要する.
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