オーガニック・インオーガニック・ペロブスキット・フェロエレクトリック
Yu-Meng You1, Wei-Qiang Liao2, Dewei Zhao3
1Ordered Matter Science Research Center, Southeast University, Nanjing, Jiangsu 211189, P. R. China. youyumeng@seu.edu.cn jjli@u.washington.edu yanfa.yan@utoledo.edu xiongrg@seu.edu.cn.
Science (New York, N.Y.)
|July 22, 2017
まとめ
研究者は,陶器に匹敵するピエゾ電気係数を持つ新しい分子ピエゾ電気材料を開発しました. この柔軟で環境に優しい素材は 医学的・機械的な応用に 期待されています
科学分野:
- 材料科学
- 固体物理学
- クリスタルグラフィー
背景:
- 分子型ピエゾ電気は 柔軟性や低温処理などの利点があります
- ピエゾ電気の長い歴史にもかかわらず,セラミクスをライバルする係数を持つ分子材料は難解である.
- バリウムチタネート (BTO) は,ピエゾ電気係数 (d33) ~190 pC/Nの基準セラミックです.
研究 の 目的:
- ピエゾセラミックと競合する d33 係数を持つ分子ピエゾ電気材料を発見し,特徴づけること.
- オーガニック・インオーガニック・ペロブスキット・フェロエレクトリックの高度な応用の可能性を評価する.
主な方法:
- 水溶液からトリメチルクロロメチルアンモニアムトリクロルマンガネス (II) の合成.
- 材料のピエゾ電気特性,特にd33係数の特徴
- 段階転換温度を測定する.
主要な成果:
- 合成された有機-無機ペロブスキットの鉄電気結晶,トリメチルクロロメチルアンモニアムトリクロルマンガネス (III) は,ニュートンあたり185ピコキュロンという大きなピエゾ電気係数 (d33) を表している.
- この材料は406ケルビンという高相変化温度を持ち,BTOの温度を16K上回る.
- 材料は水溶液から効率的に処理されました.
結論:
- トリメチルクロロメチルアンモニアムトリクロルマンガネス (III) は有望な分子ピエゾ電気材料である.
- その特性により,医療,微機械,生物機械の応用に適しています.
- この発見は分子ピエゾエレクトリックの分野を発展させ 伝統的な陶器に柔軟な代替手段を提供しました
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