Polymorphic phase transition and enhanced electrical properties of (Ba0.91Ca0.09-xSrx)(Ti0.92Sn0.08)O3 lead-free ceramics

被引：17
作者：
Wang, Xiaofang [1 ,2 ]
Chao, Xiaolian [1 ]
Liang, Pengfei [1 ]
Wei, Lingling [1 ]
Yang, Zupei [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Shaanxi, Peoples R China
[2] Xianyang Normal Univ, Coll Chem & Chem Engn, Xianyang 712000, Shaanxi, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 07期
基金：
美国国家科学基金会;
关键词：
Piezoelectric property; Lead-free ceramics; Polymorphic phase transition; Temperature stability; PIEZOELECTRIC PROPERTIES;
D O I：
10.1016/j.ceramint.2014.02.008
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：
Lead-free (Ba0.91Ca0.09-xSrx)(Ti0.92Sn0.08)O-3 ceramics were prepared by the solid state reaction method. Effects of Sr2+ content on the phase structure, electrical properties and temperature stabilities of the (Ba0.91Ca0.09-xSrx)(Ti0.92Sn0.08)O-3 ceramics were investigated systematically. The polymorphic phase transition behavior from orthorhombic to tetragonal phase around room temperature was observed in the samples with 0.005 <x < 0.02 according to XRD patterns. Owing to the coexistence of orthorhombic and tetragonal phases at room temperature, significantly enhanced electrical properties (d(33)=583 pC/N, k(p),=40%, P-r=8.73 mu C/cm(2), Ec=0.07 kV/cm and electrical strain=0.20%) were obtained in (Ba0.91Ca0.08Sr0.01)(Ti0.92Sn0.08)O-3 ceramics. Both d(33) and displayed excellent temperature stabilities in the range from 5 to 55 degrees C. These results demonstrated that (Ba0.91Ca0.08Sr0.01)(Ti0.92Sn0.08)O-3 ceramics could be a promising candidate for lead-free piezoelectric material. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：9389 / 9394
页数：6
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