Phase structures and electrical properties of new lead-free Na0.5K0.5NbO3-LiSbO3-BiFeO3 ceramics

被引：90

作者：

Jiang, Minhong ^{[1
]}

Liu, Xinyu

Chen, Guohua

机构：

[1] Cent S Univ, Coll Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

SCRIPTA MATERIALIA | 2009年 / 60卷 / 10期

关键词：

Lead-free piezoelectric ceramics; Microstructure; Perovskites; Electrical properties; Sintering; PIEZOELECTRIC PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.scriptamat.2009.02.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

(1 - x)(0.95Na(0.5)K(0.5)NbO(3)-0.05LiSbO(3))-xBiFeO(3) solid-solution piezoelectric ceramics have been fabricated by conventional ceramic processing. A morphotropic phase boundary (MPB) between orthorhombic and tetragonal ferroelectric phases was identified around x = 0.004. The ceramics near the MPB exhibit good electrical properties (d(33) = 260 pC/N-1, k(rho) = 51.5%, T-c = 365 degrees C, rho = 4.51 g cm(-3) and tan theta=2.00%). The results indicate that this ceramic is a promising lead-free piezoelectric material. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：909 / 912

页数：4

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