Morphotropic phase boundary and electric properties in (1-x)Bi0.5Na0.5TiO3-xBaSnO3 lead-free piezoelectric ceramics

被引：9

作者：

Jiao, Long ^{[1
]}

Guo, Fei-Fei ^{[2
]}

Wang, Jin-Feng ^{[1
]}

Gu, Zheng-Bin ^{[1
]}

Zhang, Shan-Tao ^{[1
]}

Yang, Bin ^{[2
]}

机构：

[1] Nanjing Univ, Dept Mat Sci & Engn, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Harbin Inst Technol, Ctr Condensed Matter Sci & Technol, Harbin 150001, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2013年 / 24卷 / 10期

基金：

国家教育部博士点专项基金资助;

关键词：

FREE PIEZOCERAMICS;

D O I：

10.1007/s10854-013-1364-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Lead-free piezoceramics of (1 - x)Bi0.5Na0.5TiO3-xBaSnO(3) (BNT-BS, x = 0, 0.02, 0.03, 0.04, 0.06, 0.09 and 0.12) have been synthesized and investigated. A rhombohedral-tetragonal morphotropic phase boundary (MPB) exists near x = 0.03. The MPB composition shows improved electrical properties: the saturated polarization, remnant polarization, coercive field, piezoelectric coefficient, planar electromechanical coupling factor, and unipolar strain are 35.8, 28.5 mu C/cm(2), and 4.5 kV/mm, 93 pC/N, 0.19, and 0.18 %, respectively. It is also found the introduction of BS can significantly enhance dielectric property. The structural and electrical properties are discussed by comparing with other BNT-based piezoceramics.

引用

页码：4080 / 4084

页数：5

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