Piezoelectric properties of BaTiO3-CaTiO3-BaZrO3 ceramics with compositions near the morphotropic phase boundary

被引：15
|
作者：
Wang, W. [1 ]
Wang, L. D. [1 ]
Li, W. L. [1 ,2 ]
Xu, D. [1 ]
Hou, Y. F. [1 ]
Cao, W. P. [1 ]
Feng, Y. [1 ]
Fei, W. D. [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Natl Key Lab Sci & Technol Precis Heat Proc Met, Harbin 150001, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Piezoelectric properties; Energy barriers; BZT-xBCT ceramics; BT-BZ-CT ternary system;
D O I：
10.1016/j.ceramint.2014.06.086
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 phase diagram of BaTiO3-CaTiO3-BaZrO3 (BT-BZ-CT) ternary system with compositions near the morphotropic phase boundary (MPB) has been studied. Based on the phase diagram, the relationship between piezoelectric properties and energy bathers of BT-BZ-CT ceramics with compositions near the MPB has been studied. Experimental result indicates that the piezoelectric response is proportional to the energy barrier between tetragonal (7) and cubic (C) phases for the samples with the same phase composition. Furthermore, when the energy barrier is small enough, polarization intensity change of the phase transitions is the decisive factor for the huge piezoelectric response. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：14907 / 14912
页数：6
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