在无陶中巨大的压电酸-酸无陶
Xiaopeng Wang1, Jiagang Wu, Dingquan Xiao
1Department of Materials Science, Sichuan University , Chengdu 610064, People's Republic of China.
Journal of the American Chemical Society
|February 7, 2014
概括
研究人员开发了一种新的无压陶材料,其压电常数 (d33) 达到490 pC/N. 这种酸基材料的突破为环保电子应用提供了高性能.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 纳米技术纳米技术
背景情况:
- 越来越多的环境和健康问题需要从商业压电材料中消除.
- 2004年开发的基酸基矿显示出无压陶的前景,但已经看到有限的d33改进.
- 之前的研究重点是纹理多晶体形式,达到416 pC/N的峰值d33.
研究的目的:
- 开发一种具有增强压电性能的新型无压陶.
- 调查组合优化,以提高酸基系统的性能.
- 为了实现压电常数 (d33),超过了以前的记录.
主要方法:
- 利用传统的固态方法进行材料合成.
- 在酸基系统中优化了成分.
- 描述了产生的陶的压电,介电和铁电性质.
主要成果:
- 在以酸尼奥巴特为基础的无压陶中实现了约490 pC/N的破纪录的d33.
- 证明了卓越的集成性能,d33在390-490 pC/N之间,库里温度 (TC) 在217-304 °C之间.
- 将这些增强的特性归因于形成了一个新的圆角面-四面体相界限,以及改进的介电/铁电特性.
结论:
- 开发的无压陶表现出迄今为止报告的最高d33.
- 构成优化是实现这些材料卓越性能的关键.
- 这一进步是迈向实际,高性能无压电应用的重要一步.
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