Effect of Sb5+ substitution on the dielectric properties of Ba3LiTa3Ti5O21 ceramics

被引：4

作者：

Liao, Wei ^{[1
,2
]}

Fang, Liang ^{[1
,2
]}

Xiang, Fei ^{[1
,2
]}

Su, CongXue ^{[1
,2
]}

Zhang, Hui ^{[1
,2
]}

机构：

[1] Guilin Univ Technol, State Key Lab Breeding Base Nonferrous Met & Spec, Guilin 541004, Peoples R China

[2] Guilin Univ Technol, Key Lab Nonferrous Mat & New Proc Technol, Minist Educ, Guilin 541004, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2013年 / 24卷 / 01期

关键词：

Sinter Temperature; Structural Phase Transition; Microwave Dielectric Property; Dielectric Resonator; Microwave Dielectric Ceramic;

D O I：

10.1007/s10854-012-0737-2

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：

The effects of substitution Sb for Ta on the sintering behavior and the microwave dielectric properties of Ba3LiTa3Ti5O21 ceramic were studied. Single-phase polycrystalline microwave dielectric ceramics Ba3LiTa3-xSbxTi5O21(x = 0-3) were prepared by the solid-state reaction method. The sintering behavior and microwave dielectric properties of Ba3LiTa3-xSbxTi5O21 ceramics were found to be affected by Sb substitution for Ta. With the increasing Sb content, the densified (>95 % of their theoretical X-ray density) temperatures of Ba3LiTa3-xSbxTi5O21 ceramics increased from 1,160 to 1,220 degrees C, the dielectric constant (epsilon(r)) decreased from 55.5 to 27, and the Q d f value enhanced significantly from 18,480 to 29,400 GHz, with tau(f) improving from 70 to -25 ppm/degrees C. A near zero tau(f) value could be obtained by carefully adjusting the Sb content.

引用

页码：272 / 276

页数：5

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