Piezoelectric and dielectric characteristics of low temperature sintering Pb(Ni1/3Nb2/3)O3-Pb(Mn1/3Nb2/3)O3-Pb(Zr1/2Ti1/2)O3 ceramics for multilayer piezoelectric actuator

被引:0
作者
Juhyun Yoo
Jungmin Hwang
Sangho Lee
Kwanghyun Chung
Hyunggyu Lee
机构
[1] Semyung University,Department of Electrical Engineering
[2] Korea Electronics Technology Institute,undefined
来源
Journal of Electroceramics | 2006年 / 17卷
关键词
Multilayer piezoelectric actuator; Electromechanical coupling factor; Piezoelectric constant; Crystal structure;
D O I
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中图分类号
学科分类号
摘要
In this study, in order to develop the composition ceramics for multilayer piezoelectric actuator, PNN substituted PMN-PZT ceramics were fabricated using Li2CO3 and Na2CO3 as sintering aids, and their piezoelectric and dielectric characteristics were investigated. With the increase of the amount of PNN substitution, dielectric constant (εr), electromechanical coupling factor (kp), and piezoelectric constant (d33) of specimens showed the maximum value at each sintering temperature, and crystal structure changed from tetragonal to rhombohedral. At the sintering temperature of 950∘C, the density, εr, kp, d33, Qm and Tc of 12 mol% PNN substituted PMN-PNN-PZT composition ceramics showed the optimal values of 7.79 g/cm3, 1160, 0.599, 419pC/N, 894 and 332∘C, respectively, for low loss multilayer piezoelectric actuator application.
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页码:525 / 529
页数:4
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