Dielectric and piezoelectric characteristics of lead-free Bi0.5(Na0.84K0.16)0.5TiO3 ceramics substituted with Sr

被引：80

作者：

Yoo, JY ^{[1
]}

Oh, DG

Jeong, Y

Hong, J

Jung, MY

机构：

[1] Semyung Univ Jechon, Dept Elect Engn, Chungbuk 390711, South Korea

[2] Sunny Elect Corp, Chungju 380240, South Korea

[3] Korea Elect Power Res Inst, Taejon 305380, South Korea

[4] Dongseoul Tech Jr Coll, Dept Elect, Sung Nam, South Korea

[5] Semyung Univ Jechon, Dept Earth Resources & Environm Geotech Engn, Chungbuk 390711, South Korea

来源：

MATERIALS LETTERS | 2004年 / 58卷 / 29期

关键词：

lead-free ceramics; perovskite structure;

D O I：

10.1016/j.matlet.2004.08.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, lead-free Bi-0.5(Na0.84K0.16)(0.5)TiO3 ceramics were fabricated with the variations of Sr substitution and their dielectric and piezoelectric characteristics were investigated. Through the analysis of XRD diffraction pattern and SEM, crystal structure and microstructure were evaluated. With the increasing amount of Sr substitution, dielectric constant linearly increased at the rate of about 90 per 1 mol% and Curie temperature decreased slightly. Also, the temperature dependence curve of dielectric constant moved leftward. At 4 mol% Sr substitution, T-c of 292 degreesC, k(p) of 34.3%, k(t) of 45.32%, epsilon(r) of 868 and d(33) of 185 pC/N were obtained, respectively. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：3831 / 3835

页数：5

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