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Journal of Materials Science: Materials in Electronics

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01-11-2015

A novel low-loss spinel microwave dielectric ceramic CoZnTiO₄

Authors: Xiaosong Lyu, Lingxia Li, Hao Sun, Sai Li, Jing Ye, Shuai Zhang

Published in: Journal of Materials Science: Materials in Electronics | Issue 11/2015

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Abstract

Spinel CoZnTiO₄ ceramics were synthesized by conventional solid-state method and their microwave dielectric properties were investigated. The crystal structure and microstructures of specimens were studied by XRD and SEM. The CoZnTiO₄ phase forms at a temperatures ranging from 1140 to 1220 °C and the dependence of the dielectric properties of the ceramics on the sintering condition is found to be insignificant. The relative densities of the specimens are higher than 95 % for the entire temperature range tested during the experiment. Specimen using CoZnTiO₄ sintered at 1200 °C possesses a combination of dielectric properties with ε _r ~ 17.31, Q × f ~ 97,571 GHz (where f = 8.84 GHz, is the resonant frequency) and τ_f ~ −36.4 ppm/°C, which makes it a suitable candidate material for microwave devices.

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Title: A novel low-loss spinel microwave dielectric ceramic CoZnTiO4
Authors: Xiaosong Lyu
Lingxia Li
Hao Sun
Sai Li
Jing Ye
Shuai Zhang
Publication date: 01-11-2015
Publisher: Springer US
Published in: Journal of Materials Science: Materials in Electronics / Issue 11/2015
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-015-3541-y

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