A new Na0.5Bi0.5TiO3 based lead-free piezoelectric system with calculated end-member Bi(Zn0.5Zr0.5)O3

被引：2
|
作者：
Liu, Feng [1 ,2 ]
Wahyudi, Olivia [1 ]
Lu, Yiqing [1 ]
Li, Yongxiang [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷
基金：
中国国家自然科学基金;
关键词：
Lead-free; MPB; NBT-BZZ; First-principles; PEROVSKITE; CERAMICS;
D O I：
10.1016/j.ceramint.2015.03.287
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：
This study shows a new lead-free piezoelectric system (1-x)Na0.5Bi0.5TiO3-xBi(Zn0.5Zr0.5)O-3 [(1-x)NBT-xBZZ, x=0, 0.02, 0.03, 0.035, 0.04 and 0.05]. The structure of Bi(Zn0.5Zr0.5)O-3 was calculated with first-principles method. A morphotropic phase boundary (MPB) near x=0.03 between rhombohedral and pseudo-cubic phases was found, and its improvement in electrical properties was demonstrated. In the MPB composition, the maximum polarization, remnant polarization, coercive field and piezoelectric coefficient are 46.4 mu C/cm(2), 39.2 mu C/cm(2), 4.8 kV/mm and 95 pC/N, respectively. The results not only show a new lead-free piezoelectric system but also suggest a new route to designing lead-free piezoelectric materials. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：S31 / S36
页数：6
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