Microstructures and microwave dielectric characteristics of Ca(Zn1/3Nb2/3)O3 complex perovskite ceramics

被引：48

作者：

Chen, XM ^{[1
]}

Liu, D ^{[1
]}

Hou, RZ ^{[1
]}

Hu, X ^{[1
]}

Liu, XQ ^{[1
]}

机构：

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

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2004年 / 87卷 / 12期

关键词：

D O I：

10.1111/j.1151-2916.2004.tb07492.x

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：

Ca(Zn1/3Nb2/3)O-3 microwave dielectric ceramics were prepared using a solid-state reaction process, and their microwave dielectric properties were evaluated as functions of sintering and postdensification annealing conditions. The relationship between microwave dielectric properties and processing was interpreted through the variation of microstructures. The dielectric constant showed slight variation with sintering and annealing conditions, but the QxF value increased at first and then decreased with increased sintering temperature, and annealing in oxygen indicated significant improvement in QxF, especially for the specimens sintered at higher temperatures. The good microwave dielectric properties were obtained in the ceramics sintered at 1225degreesC in air for 3 h and annealed at 1100degreesC in oxygen for 8 h: epsilon = 34.1, QxF = 15 890 GHz, tau(f) = -48 ppm/degreesC.

引用

页码：2208 / 2212

页数：5

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