Dielectric and Piezoelectric Properties of (Na,K)(Nb,Sb)O3 Ceramics Substituted with (Na,Li,Bi)TiO3

被引：0

作者：

Yoo, Juhyun ^{[1
]}

机构：

[1] Semyung Univ, Dept Elect Engn, Jechon, Chungbuk, South Korea

来源：

FERROELECTRICS | 2015年 / 481卷 / 01期

关键词：

piezoelectric constant; (K0.5Na0.5 ) (Nb0.96Sb0.04)O-3; electromechanical coupling factor; NLBT; Lead-free ceramics; ELECTRICAL-PROPERTIES; MICROSTRUCTURE; TEMPERATURE;

D O I：

10.1080/00150193.2015.1049487

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free (1-x)(K0.5Na0.5)(0.97)(Nb0.96Sb0.04)O-3+x(Na0.25Li0.25Bi0.5)TiO3 ceramics were synthesized using conventional solid state sintering method and then the effect of (Na0.25Li0.25Bi0.5)TiO3 (abbreviated as NLBT) substitution on the microstructure and piezoelectric properties were investigated. The specimens exhibited a pure perovskite structure. The grain size of the specimens decreased with increasing the content of NLBT substitution. The phase transition temperature of orthorhombic-tetragonal (TO-T) and tetragonal-cubic (T-C) were decreased with increasing the content of NLBT substitution. 0.5 mol% NLBT substituted (K0.5Na0.5)(0.97)(Nb0.96Sb0.04)O-3 ceramics exhibited the optimum values of d(33) = 171pC/N, k(p) = 0.467 and Q(m) = 320. The results show that 0.995NKN-0.005NLBT composition is a promising candidate material for piezoelectric device applications.

引用

页码：41 / 47

页数：7

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