Ba5Li2W3O15: A New Li-Containing Perovskite-Type Microwave Ceramic with High Q and Low τf

被引：9

作者：

Fang, Liang ^{[1
]}

Wei, Zhenhai ^{[1
]}

Liao, Wei ^{[1
]}

Zhou, Huanfu ^{[1
]}

Zhang, Hui ^{[1
]}

Xiang, Fei ^{[1
]}

机构：

[1] Guilin Univ Technol, State Key Lab Breeding Base Nonferrous Met & Spec, Key Lab Nonferrous Mat & New Proc Technol, Minist Educ,Coll Mat Sci & Engn, Guilin 541004, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2014年 / 97卷 / 02期

关键词：

DIELECTRIC-PROPERTIES;

D O I：

10.1111/jace.12649

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：

A new Li-containing microwave ceramic Ba5Li2W3O15 with hexagonal perovskite structure was prepared through a solid-state ceramic route. Small amount of scheelite BaWO4 appeared as a second phase during sintering. The Ba5Li2W3O15 could be well densified at 1120 degrees C and exhibits good microwave dielectric properties with permittivity (epsilon(r)) of 25.4, high Qxf value about 39000GHz, and low temperature coefficient of resonate frequency ((f)) of 10ppm/degrees C. The addition of BaCu(B2O5) can effectively lower the sintering temperature from 1120 degrees C to 900 degrees C and does not induce degradation of the microwave dielectric properties. These results indicate that the Ba5Li2W3O15 ceramic might be a promising candidate in microwave dielectric resonators.

引用

页码：498 / 500

页数：3

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