Dielectric and piezoelecrtic properties of lead-free (Na0.5Bi0.5)TiO3-NaNbO3 ceramics

被引：190

作者：

Li, YM

Chen, W ^{[1
]}

Zhou, J

Xu, Q

Sun, H

Xu, RX

机构：

[1] Wuhan Univ Technol, Inst Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China

[2] Jingdezhen Ceram Inst, Jingdezhen 333001, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2004年 / 112卷 / 01期

基金：

中国国家自然科学基金;

关键词：

dielectric properties; piezoelectric properties; Na0.5Bi0.5TiO3; perovskite; relaxor;

D O I：

10.1016/j.mseb.2004.04.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, lead-free [Na0.5(1+x)Bi0.5(1-x)](Ti(1-x)Nbx)O-3 (x= 0-0.08) ceramics were fabricated by using conventional ceramic technique. The phase structure of the solid solution has been determined by the X-ray diffraction. Dielectric study revealed that the dielectric relaxor behavior becomes more obviously by doping of NaNbO3 into (Na0.5Bi0.5)TiO3. The samples in the composition range from x = 0.01 to 0.02 exhibited excellent electrical properties, piezoelectric constant d(33) = 80-88 pC/N; electromechanical planar coupling coefficients k(p) = 17.92%. The results show that the [Na0.5(1+x)Bi0.5(1-x)](Ti(1-x)Nbx)O-3 ceramics are one of the promising lead-free materials for ultrasonic transducer applications. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：5 / 9

页数：5

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