熱膨張,鉄電気,磁気特性は (1 - x) PbTiO ((3) - xBiNi (((1/2) Ti ((1/2)) O ((3)) で表されている
Penghao Hu1, Jun Chen, Jinxia Deng
1Department of Physical Chemistry, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China.
Journal of the American Chemical Society
|January 26, 2010
まとめ
研究者は,鉛チタナートを化学的に改変することによって,ゼロに近い熱膨張を持つ新しいマルチフェロ化合物を開発しました. この材料は,強化されたピエゾ電気性,鉄電気性,および機械的特性を発揮し,高性能アプリケーションに適しています.
科学分野:
- マテリアルサイエンス 材料科学
- 固体化学 固体化学
- マルチフェロ材料 マルチフェロ材料
背景:
- 鉛チタナート (PbTiO3) ベースの材料は,そのピエゾ電気および鉄電気特性のために広く研究されています.
- 調節可能な熱膨張とマルチフェロ特性を持つ材料の開発は,高度なアプリケーションにとって不可欠です.
研究 の 目的:
- ゼロに近い熱膨張を持つ新しいマルチフェロ化合物を合成し,特徴づけること.
- (1 - x) PbTiO3-xBi ((Ni ((1/2) Ti ((1/2)) O3) 固体溶液の構造,電気,磁気,および機械的性質を調査する.
主な方法:
- 材料合成のための化学変化経路.
- 構造分析のためのX線 difraktion.構造分析のためのX線 difraktion.
- 熱膨張係数の測定. 熱膨張係数の測定.
- 鉄電気,ピエゾ電気,磁気特性評価 鉄電気,ピエゾ電気,磁気特性の評価 鉄電気,ピエゾ電気,磁気特性の評価 鉄電気,ピエゾ電気,磁気特性の評価 鉄電気,ピエゾ電気,磁気特性の評価 鉄電気,ピエゾ電気,磁気特性の評価
主要な成果:
- (1 - x) PbTiO3-xBi(Ni(1/2) Ti(1/2)) O3の固体溶液が成功裏に開発されました.
- テトラゴナリティは減少し,ゼロに近い熱膨張 (−8.81 x 10^-6/°Cから 8.46 x 10^-6/°C) に至った.
- 弱い鉄磁性が観察され,ピエゾ電気と鉄電性が保持された.
- 高密度と断裂耐久性を含む優れた機械性能が達成されました.
結論:
- 開発された (1 - x) PbTiO3-xBi(Ni(1/2) Ti(1/2)) O3セラミクスは,マルチフェロ性,ほぼゼロの熱膨張,優れた機械性能の有望な組み合わせを示しています.
- これらの材料は,熱安定性を要求する高性能ピエゾセラミックアプリケーションに適しています.
- この研究は,高度なマルチフェロ化合物を設計するための実行可能な戦略を提示しています.
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