無鉛分子フェロ電気薄膜における大きなピエゾ電気効果
Wei-Qiang Liao1, Yuan-Yuan Tang1, Peng-Fei Li1
1State Key Laboratory of Bioelectronics, and Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
Journal of the American Chemical Society
|November 17, 2017
まとめ
新しい無鉛分子フェロエレクトリック,トリメチルブロメチルアモニアムトリブロマンガネス (TMBM-MnBr3) は,112pC/Nの有意なピエゾ電気係数 (d33) を表しています. この発見は 次世代のピエゾ電気装置の開発に 有望な代替手段となるでしょう
科学分野:
- 材料科学
- 固体物理学
- 鉄電化
背景:
- 鉛ジルコナートチタナート (PZT) 陶器はピエゾ電気市場を支配しているが,有毒な鉛を含んでいる.
- 比較可能な性能を持つ無鉛のピエゾ電気材料が不可欠です.
- 分子フェロ電気は 柔軟性や環境に優しい加工などの利点があります
研究 の 目的:
- 新しい無鉛の 単一組成の分子鉄電性物質を報告する
- そのピエゾ電気とフェロ電気の性質を特徴づける.
- 次の世代のピエゾ電気装置の 可能性を評価する
主な方法:
- トリメチルブロメチルアモニアムトリブロマンガネス (TMBM-MnBr3) の合成と特徴づけ
- 極軸に沿ったピエゾ電気係数 (d33) の測定
- 強制電圧と多軸特性を含む鉄電性能の評価
- フィルムと大量結晶のピエゾ電気的性質の比較
主要な成果:
- TMBM-MnBr3は,PZTに匹敵する112 pC/Nのピエゾ電気係数d33を多く示し,ほとんどの分子フェロ電気に優れている.
- TMBM-MnBr3フィルムの効果的な局所圧電係数は,その塊結晶と比較できます.
- 低強制電圧と多軸特性により,ピエゾフィルムの適用が容易になります.
結論:
- TMBM-MnBr3は優れたピエゾ電気特性を持つ有望な無鉛分子フェロエレクトリックです.
- フィルムの性能と処理の利点は,産業用および医療用ピエゾ電気装置に新しい道を開きます.
- この材料は鉛ベースのピエゾ電気材料に 持続可能な代替手段を提供しています
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