Strontium/titanium cosubstituted Ba4Sm2Ti4Ta6O30 dielectric ceramics

被引：15

作者：

Li, J ^{[1
]}

Chen, XM ^{[1
]}

Wu, YJ ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, Inst Mat Phys & Microstruct, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2002年 / 22卷 / 01期

关键词：

Ba4Sm2Ti4Ta6O30; dielectric properties; tungsten-bronze structure;

D O I：

10.1016/S0955-2219(01)00233-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Modification of the dielectric properties of Ba4Sm2Ti4Ta6O30 ceramics by Sr substitution for Ba on the A-sites and Ti substitution for Ta on the B-sites was investigated. With increasing Ti concentration, the temperature coefficient of the dielectric constant was significantly improved together with decreased dielectric loss and slightly decreased dielectric constant. The minimum temperature coefficient of -470ppm/degreesC was obtained in the composition of Ba2Sr2Sm2Ti4+xTa6-xO30-x/2(x = 3.0) with epsilon = 111, Qf = 200 GHz. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：87 / 91

页数：5