Large piezoelectric effect in (1-x)Ba(Zr0.15Ti0.85)O3-x(Ba0.8Sr0.2)TiO3 lead-free ceramics

被引：24
作者：
Liang, Dayun [1 ]
Zhu, Xiaohong [1 ]
Zhang, Yu [1 ]
Shi, Wei [2 ]
Zhu, Jiliang [1 ]
机构：
[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China
[2] Tongren Coll, Sch Mat & Chem Engn, Tongren 554300, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Lead-free; Piezoceramics; Polymorphic phase transition; Piezoelectric coefficient; Dielectric permittivity; DIELECTRIC-PROPERTIES; ELECTRICAL-PROPERTIES; TEMPERATURE; COEFFICIENT; SYSTEM;
D O I：
10.1016/j.ceramint.2015.03.017
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：
A new type of lead-free piezoelectric ceramics (1 - x)Ba(Zr0.15Ti0.85)O-3-x(Ba0.8Sr0.2)TiO3 (abbreviated as BZT-xBST or BSZT) were designed and prepared using the traditional solid-state reaction technique. The polymorphic phase transition (PPT) from rhombohedral to tetragonal phase (R-7) was adjusted to room temperature through modifying the proportion of BZT and BST terminals. A high piezoelectric coefficient d(33)=450 pC/N and a high dielectric permittivity epsilon(r)=4070 were simultaneously demonstrated for the BSZT ceramic samples with x=0.70, indicating that the BSZT ceramics are promising candidates for lead-free piezoelectric applications. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：8261 / 8266
页数：6
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