Microstructure and electrical properties in Zn-doped Ba0.85Ca0.15Ti0.90Zr0.10O3 piezoelectric ceramics

被引：70

作者：

Zhao, Zhihao ^{[1
]}

Li, Xiaolei ^{[1
]}

Ji, Huiming ^{[1
]}

Dai, Yejing ^{[1
]}

Li, Ting ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Key Lab Adv Ceram & Machining Technol, Minist Educ, Tianjin 300072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 637卷

基金：

中国国家自然科学基金;

关键词：

Piezoelectricity; Ferroelectricity; Relaxor behavior; Domain structure; LEAD-FREE CERAMICS; DOMAIN CONFIGURATION; BATIO3; CERAMICS; TEMPERATURE; CRYSTALS; SIZE;

D O I：

10.1016/j.jallcom.2015.02.093

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Piezoelectric ceramics doped with small amounts of elements usually cause significant improvement in piezoelectric properties. In this study, we prepared Ba0.85Ca0.15Ti0.90Zr0.10O3-x wt% ZnO (0 <= x <= 0.16) ceramics via a conventional solid-state reaction method. The evolution of domain structure, relaxor behavior, ferroelectric and piezoelectric properties with Zn doping was systematically investigated. The ceramics with x = 0.08 possess slender domain patterns and high domain wall density. The Ba0.85Ca0.15Ti0.90Zr0.10O3-8 wt% ZnO ceramics show maximum remnant polarization and spontaneous polarization (P-r = 10.14 mu C/cm(2), P-s = 19.68 mu C/cm(2)). A giant piezoelectric coefficient of d(33) = 603 pC/N and high planar electromechanical coupling factor of k(p) = 0.56 were obtained for the sample of x = 0.08, showing the potential possibilities for lead-free piezoelectric application. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：291 / 296

页数：6

共 33 条

[1] DOMAIN CONFIGURATION AND EQUILIBRIUM SIZE OF DOMAINS IN BATIO3 CERAMICS [J].