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通过BiFeO₃基无陶中缺陷二极管实现增强的压电反应

Jimin Lin¹, Jin Qian¹, Yunjing Shi¹

¹Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.

ACS applied materials & interfaces

|November 22, 2024

概括

维斯木铁酸盐 (BiFeO3) 陶中的缺陷可以通过在高温下与电场对齐来增强压电特性. 这项研究优化了缺陷度,以提高铁电和压电性能.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
陶工程陶工程陶工程

背景情况:

压电材料中缺陷的作用是复杂的,涉及降低电阻和增强压电之间的权衡.
了解缺陷极化机制对于优化压电陶至关重要.

研究的目的:

为了研究缺陷度对基于BiFeO3的陶的压电性能的综合影响.
为了确定最佳的缺陷水平,以提高压电性能,同时保持绝缘特性.

主要方法:

设计和合成具有不同缺陷度的基于BiFeO3的陶.
在受控的高温和电场条件下,压电特性 (d33,Tc,kp) 的表征.
在极化过程中对缺陷双极方向的分析.

主要成果:

结合特定的缺陷度可以增强压电特性,并保持绝缘性.
在高温下,缺陷二极管和内在极化与电场对齐.
优化的BF-BT-BKT陶具有显著的压电性能 (d33 = 203 ± 5 pC/N,Tc = 502 °C,kp = 33.05%).

结论:

在BiFeO3陶中,缺陷工程为增强铁和压电特性提供了一条途径.
这项研究提供了一个框架,以了解在木铁酸盐中控制压电性的结构机制.
优化缺陷度是实现先进陶材料优越压电性能的关键.

关键词:

这就是BiFeO3的含量.缺陷工程是什么?缺陷工程是什么?域名配置域名配置在高温应用中使用.压电陶陶是一种材料.

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