Microwave Dielectric Properties of Zn1-xCaxTi0.6Zr0.4Nb2O8 Ceramics

被引：0
|
作者：
Xie Z. [1 ,3 ]
Huang Y. [1 ]
Li Y. [1 ,2 ,3 ]
Shen Z. [1 ,2 ]
Song F. [1 ]
Li Z. [1 ]
机构：
[1] School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333403, Jiangxi
[2] China National Light Industry Key Laboratory of Functional Ceramic Materials, Jingdezhen, 333403, Jiangxi
[3] Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, Jingdezhen, 333403, Jiangxi
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2019年 / 47卷 / 03期
关键词：
Calcium ion substitution; Dielectric properties; Microstructure; Microwave dielectric ceramic;
D O I：
10.14062/j.issn.0454-5648.2019.03.07
中图分类号：
学科分类号：
摘要：
Zn1-xCaxTi0.6Zr0.4Nb2O8(x = 0.05, 0.10, 0.20, 0.30) microwave dielectric ceramics were prepared by a solid-state reaction method. The effect of Ca2+ substitution amount on the phase composition, microstructure and microwave dielectric properties of Zn1-xCaxTi0.6Zr0.4Nb2O8 ceramics was investigated by X-ray diffraction, scanning electron microscopy and network analysis, respectively. The results show that Ca2+ substitution of Zn2+ leads to the formation of the second phase of CaNb2O6, the content of ZnTiNb2O8 phase decreases and the content of CaNb2O6 phase increases with the increase of Ca2+ content, leading to the decrease of dielectric constant εr and quality factor Q×f of Zn1-xCaxTi0.6Zr0.4Nb2O8 ceramics, and the temperature coefficient of resonant frequency τf shifting to a positive direction. The optimum microwave dielectric properties (i.e., εr=30.42, Q×f=47280GHz, τf=-25.37×10-6/℃) are obtained when Zn1-xCaxTi0.6Zr0.4Nb2O8 ceramic is sintered at 1140℃ as x=0.3. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：330 / 335
页数：5
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