Ferroelectric relaxor properties of (1-x)K0.5Na0.5NbO3-xBa0.5Ca0.5TiO3 ceramics

被引：11
|
作者：
Cho, C. -W. [1 ]
Cha, M. R. [1 ]
Jang, J. Y. [1 ]
Lee, S. H. [1 ]
Kim, D. J. [1 ]
Park, S. [1 ]
Bae, J. S. [2 ]
Bu, S. D. [3 ]
Lee, S. [4 ]
Huh, J. [5 ]
机构：
[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea
[2] Korea Basic Sci Inst, Busan Ctr, Pusan 609735, South Korea
[3] Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea
[4] JPS Microtech, Pusan 619961, South Korea
[5] Chonnam Natl Univ, Yeosu 550749, South Korea
来源：
CURRENT APPLIED PHYSICS | 2012年 / 12卷 / 05期
关键词：
Relaxor ferroelectric; Dielectric constant; X-ray diffraction;
D O I：
10.1016/j.cap.2012.03.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Ba0.5Ca0.5TiO3 (BCT) composition dependent dielectric and structural properties of (1 - x)K0.5Na0.5NbO3-xBa(0.5)Ca(0.5)TiO(3) powders were investigated. Room temperature x-ray diffraction revealed the powder structure to transform from orthorhombic to cubic with increasing BCT composition. The frequency dependent dielectric constant measurements revealed a shift in the temperature of the maximum dielectric constant for at frequencies, suggesting that the system exhibits ferroelectric relaxor behavior. The system containing 15% BCT showed the closest calculated Curie-Weiss exponent to 2, which the exponent for a relaxor ferroelectric. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：1266 / 1271
页数：6
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