Microwave properties of B2O3-doped Nd(Mg1/2Ti1/2)O3-CaTiO3 dielectric resonators at microwave frequency

被引:16
|
作者
Huang, CL [1 ]
Chen, YB [1 ]
机构
[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan
关键词
dielectric properties; microwave dielectric; microwave dielectric properties; X-ray;
D O I
10.1016/j.matlet.2005.08.016
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effects of B2O3 addition on the microwave dielectric properties and the microstructures of (1-x)CaTiO3-xNd(Mg1/2Ti1/2)O-3 ceramics prepared by conventional solid-state routes have been investigated. Doping with 0.5 wt.% B2O3 can effectively promote the densification and the microwave dielectric properties of (1-x)CaTiO3-xNd(Mg1/2Ti1/2)O-3. It is found that CaTiO3-Nd(Mg1/2Ti1/2)O-3 ceramics can be sintered at 1300 degrees C due to the liquid phase effect of a B2O3 addition observed by scanning electronic microscopy (SEM). The system forms a solid solution throughout the entire compositional range. The dielectric constant decreases from 143 to 27 as x varies from 0.1 to 1.0. In the (1-x)CaTiO3-xNd(Mg1/2Ti1/2)O-3 system, the microwave dielectric properties can be effectively controlled by varying the x value. The microwave dielectric properties indicate the possibility of a phase transformation for x between 0.3 and 0.5. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:198 / 202
页数:5
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