Preparation and characterization of (K0.5Na0.5)NbO3 ceramics

被引：315

作者：

Birol, H ^{[1
]}

Damjanovic, D ^{[1
]}

Setter, N ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, LC, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 06期

关键词：

sintering; dielectric properties; piezoelectric properties; perovskites; (K; Na)NbO3;

D O I：

10.1016/j.jeurceramsoc.2004.11.022

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：

In this paper the preparation and characterization of the ceramic material (K0.5Na0.5)NbO3 (KNN) has been studied. Although conventional processing of KNN is often reported to result in sintered bodies lacking sufficient density, samples produced in this work exhibit theoretical density over 95% and yield superior piezoelectric properties than those obtained by the same method and reported previously. The electromechanical coupling coefficient in the thickness direction, k(t), is found to reach 45%. Apart from k(t), the piezoelectric coefficients in longitudinal and planar directions (663 of 100pC/N and d(31) of 43pC/N), hysteresis loop, pyroelectric coefficient measurements and dielectric properties are presented. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：861 / 866

页数：6

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