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Journal of Materials Science: Materials in Electronics
Published in: Journal of Materials Science: Materials in Electronics 1/2016

04-09-2015

Microwave dielectric properties of low-fired Li2ZrO3–ZnO composite ceramics

Authors: Jianli Ma, Zhifen Fu, Peng Liu, Xudong Tang

Published in: Journal of Materials Science: Materials in Electronics | Issue 1/2016

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Abstract

We fabricated the low-fired (1 − x)Li2ZrO3–xZnO (0.1 ≤ x ≤ 0.5) composite ceramics doped with 3 wt% LiF by a conventional solid-state route, and investigated systematically their sintering characteristics, microstructures and microwave dielectric properties. The results showed that Li2ZrO3 and ZnO coexist in the sintered ceramics, and temperature stability of Li2ZrO3 ceramics were improved by doping ZnO. Furthermore, addition of LiF successfully reduced the sintering temperatures of Li2ZrO3–ZnO ceramics to below 950 °C. A typical sample of 0.7Li2ZrO3–0.3ZnO–3 wt% LiF with optimum dielectric properties (ɛ r  = 14.8, Q × f = 26,800 GHz, τ f  = 1 ppm/°C) were achieved at 940 °C for 4 h. Such sample was compatible with Ag electrodes, suitable for the low-temperature co-fired ceramics (LTCC) applications.
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Metadata
Title
Microwave dielectric properties of low-fired Li2ZrO3–ZnO composite ceramics
Authors
Jianli Ma
Zhifen Fu
Peng Liu
Xudong Tang
Publication date
04-09-2015
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 1/2016
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-015-3744-2

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