Structure and microwave dielectric properties of Ba3Ti4-x(Fe1/2Nb1/2)xNb4O21 solid solutions

被引：8
|
作者：
Zou, Dong [1 ]
Zhang, Qi-Long [1 ]
Yang, Hui [1 ]
机构：
[1] Zhejiang Univ, Coll Mat Sci & Chem Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2009年 / 20卷 / 08期
关键词：
CERAMICS; PERMITTIVITY; FLUORIDES; OXIDES; TA;
D O I：
10.1007/s10854-008-9798-7
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ba3Ti4-x(Fe1/2Nb1/2)(x)Nb4O21 (0 <= x <= 4) ceramics with the substitution of (Fe1/2Nb1/2) for Ti were investigated. The modified Ba3Ti4-xNb4O21 dielectric ceramics prepared via the solid state reaction route exhibited single hexagonal structure. The dielectric constant and the quality factor of Ba3Ti4-x(Fe1/2Nb1/2)(x)Nb4O21 (0 <= x <= 4) ceramics decreased with an increase of x. Improved temperature coefficient of the resonant frequency of samples was obtained by the substitution of (Fe1/2Nb1/2) for Ti. Optimal microwave dielectric properties of epsilon(r) = 50, Q x f = 5200 GHz, and tau(f) = 10 ppm/degrees C in Ba3Ti2(Fe1/2Nb1/2)(2)Nb4O21 were obtained, which indicated its potential for microwave application.
引用
收藏
页码：756 / 760
页数：5
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