Enhanced electrical properties in A-site K/Ce and B-site W/Cr co-substituted CaBi2Nb2O9 high temperature piezoelectric ceramic

被引：27
作者：
Chen, Zhenning [1 ]
Li, Xudong [1 ]
Sheng, Linsheng [1 ]
Du, Juan [2 ]
Bai, Wangfeng [3 ]
Li, Lili [1 ]
Wen, Fei [1 ]
Zheng, Peng [1 ]
Wu, Wei [1 ]
Zheng, Liang [1 ]
机构：
[1] Hangzhou Dianzi Univ, Coll Elect & Informat, Hangzhou 310018, Zhejiang, Peoples R China
[2] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Shandong, Peoples R China
[3] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 12期
基金：
中国国家自然科学基金;
关键词：
ELECTROMECHANICAL PROPERTIES; THERMAL-STABILITY; CRYSTAL-STRUCTURE; MN; CE; FERROELECTRICITY; (LI;
D O I：
10.1007/s10854-019-01534-3
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A-site K/Ce and B-site W/Cr co-substituted CaBi2Nb2O9 ceramics were synthesized by a conventional solid-state reaction process. The structures, piezoelectricity and electrical conduction behaviors were investigated in detail. The Ca-0.95(K1/2Ce1/2)(0.05)Bi2Nb1.99(W2/3Cr1/3)(0.01)O-9 ceramic exhibited best properties with a high d(33) (piezoelectric coefficient) of similar to 18.4 pC/N and a high T-C (Curie temperature) of similar to 917 degrees C. In addition, the ceramic displayed an excellent thermal stability performance such that d(33) remained 94% of its initial value even after annealing at 900 degrees C for 2h. The planar electromechanical coupling factor was observed to increase from 9.00% at room temperature to 15.24% at 600 degrees C. Furthermore, a high electrical resistivity of 1.16x10(5) cm at 600 degrees C and a good fatigue property were also achieved with this composition. The Ca-0.95(K1/2Ce1/2)(0.05)Bi2Nb1.99(W2/3Cr1/3)(0.01)O-9 ceramic was found to be a promising candidate for high-temperature piezoelectric applications.
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页码：11727 / 11734
页数：8
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