Abstract
The (1-x)(0.7ZnNb2O6-0.3Zn3Nb2O8)-xZnAl2O4 (x=0~10%, ZZZ) microwave dielectric ceramics were prepared by the conventional solid-state reaction process. The phase composition, microstructure and microwave dielectric properties of the ZZZ ceramics were investigated. The results show that the ZZZ ceramics can be sintered into porcelain at 1 150 ℃, forming a multiphase structure in which ZnNb2O6, Zn3Nb2O8 and ZnAl2O4 coexist without appearance of new phases. At microwave frequency, the dielectric constant of ZZZ ceramics is 21 to 24, and the product of quality factor and frequency (Q×f) is 30 000 GHz to 85 000 GHz. With the increase of ZnAl2O4 content, the microwave dielectric constant, Q×f value, and temperature coefficient of resonance frequency of ZZZ ceramics decrease, and the temperature stability improves.
Translated title of the contribution | Study on the Structure and Properties of Zn-Nb-O Microwave Dielectric Ceramics |
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Original language | Chinese (Traditional) |
Pages (from-to) | 259-262 and 267 |
Journal | Yadian Yu Shengguang/Piezoelectrics and Acoustooptics |
Volume | 42 |
Issue number | 2 |
DOIs | |
State | Published - 1 Apr 2020 |