Influence of Ni2+ Substitution for Zn2+ on Microwave Dielectric Properties of Zn1−xNixZrNb2O8 Ceramics

被引：0

作者：

Mi Xiao

Peng Zhang

Hongrui Sun

Ziqi Zhou

Ping Zhang

机构：

[1] Tianjin University,Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Electrical and Information Engineering

来源：

Journal of Electronic Materials | 2019年 / 48卷

关键词：

Microwave dielectric properties; bond ionicity; lattice energy; bond energy;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Dependence of microwave dielectric properties on the crystal structure of Zn1−xNixZrNb2O8 was investigated as a function of NiO content (x = 0, 0.02, 0.04, 0.06, 0.08). Pure single phase with monoclinic wolframite structure was obtained through solid-state reacti. The unit-cell volume of the specimens decreased with NiO content because of the smaller ionic radius of Ni2+ than Zn2+. Dielectric constant (K) of the sintered specimen was affected by bond-ionicity. Quality factor (Q × f0) was analyzed depending on the lattice-energy. With the increase of Ni2+, temperature coefficient of resonant frequency (τf) of specimens increased due to the increase of B-site bond energy. The sample of Zn1−xNixZrNb2O8 (x = 0.08) sintered at 1250°C for 4 h showed excellent microwave dielectric properties, εr of 25.72, Q × f0 value of 73224 GHz, and τf of − 39.14 ppm/°C.

引用

页码：6553 / 6560

页数：7

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