Electrical Properties and Relaxor Behavior of 0.995[(K0.5Na0.5)0.95Li0.05](Nb0.95Sb0.05)O3-0.005BaTiO3 Lead-free Piezoelectric Ceramics

被引：0
|
作者：
Wu, W. J. [1 ]
Xiao, D. Q. [1 ]
Wu, J. G. [1 ]
Zhu, J. G. [1 ]
Zhang, B. [1 ]
Li, J. [1 ]
机构：
[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China
来源：
ISAF: 2009 18TH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS | 2009年
关键词：
lead-free ceramics; 0.995KNLNS-0.005BT; relaxor behavior; electrical properties; POLARIZATION;
D O I：
暂无
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：
The new lead-free ferroelectrics with composition of 0.995[(K0.5Na0.5)(0.95)Li-0.05](Nb0.95Sb0.05)O-3-0.005BaTiO(3) (0.995KNLNS-0.005BT) were prepared by using normal sintering method, and the ferroelectric relaxor behavior and electrical properties of the ceramics were systematically studied. The ceramics exhibit typical ferroelectric relaxor behavior, that is, the dielectric peaks become increasingly broad, and the temperature of the maximum dielectric constant is shifted to higher temperature with the increasing frequency. The dielectric relaxor behavior follows the modified Curie Weiss law. The relaxor behavior of the ceramics should be attributed to the cationic disorder induced by both of the A-sites and B-sites substitutions. The 0.995KNLNS-0.005BT ceramics also exhibit good piezoelectric properties with d(33) of 269 pC/N, k(p) of 0.50, epsilon(r) of 1371, tan delta of 0.03, T-C of 349 degrees C, P-r of 22.4 mu C/cm(2), and E-c=15.3 kV/cm.
引用
收藏
页码：141 / 144
页数：4
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