Synthesis of Na0.5Bi0.5TiO3 whiskers and their nanoscale piezoelectricity

被引：12

作者：

Jiang, Chao ^{[1
]}

Zhou, Xuefan ^{[1
]}

Zhou, Kechao ^{[1
]}

Wu, Mingliang ^{[1
]}

Zhang, Dou ^{[1
]}

机构：

[1] Cent S Univ, State key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Na0.5Bi0.5TiO3; whiskers; Nanodomains; Piezoelectric response; NANOWIRE ARRAYS; SODIUM TITANATE; MOLTEN-SALT; ZNO; MORPHOLOGY; NANOSTRUCTURES; NANOGENERATOR; FABRICATION; PEROVSKITE; MECHANISM;

D O I：

10.1016/j.ceramint.2017.05.321

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The perovskite structured lead-free system Na0.5Bi0.5TiO3 (NBT) whiskers were synthesized from whiskers of layered tunnel structured Na2Ti6O13 (NT), using a topochemical route. Both NT and NBT whiskers show high aspect ratios with an average length of 15 pm and diameter of 1 pm. By prolonging the reaction time from 2 h to 6 h at 900 degrees C, NT whiskers with monoclinic phase completely transformed to NBT whiskers with pseudocubic phase. Typical strip-like nanodomains are observed in a NBT whisker, which are parallel to each other. The piezoelectric response amplitude for a NBT whisker indicates a large electric field induced strain, corresponding to a S-max/E-max value of as high as 300 pm/V. This work provides an in-depth instruction to prepare pure NBT whiskers, and gives the detailed piezoelectricity of NBT whiskers to promote their applications in energy harvesting and micro-electromechanical systems.

引用

页码：11274 / 11280

页数：7

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