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Published in:
23-08-2016
Effects of B2O3 addition on the sintering behavior and microwave dielectric properties of Li3Mg2NbO6 ceramics
Published in: Journal of Materials Science: Materials in Electronics | Issue 1/2017
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Abstract
Li3Mg2NbO6 + x wt% B2O3 compounds were prepared through conventional solid-state reaction route. The effect of B2O3 additives on the sintering characteristics, microstructures and microwave dielectric properties of Li3Mg2NbO6 ceramics have been investigated. We found that doping with the B2O3 reduced the sintering temperature and improved the grain growth. The dielectric constant εr and the quality factor value Q × f had same variation trend with bulk density. The τ
f
values toward the negative direction with the increasing the amount of B2O3. Typically, excellent microwave dielectric properties with εr = 14.0, Q × f = 67,451 GHz, τ
f
= −16.82 ppm/°C were obtained for Li3Mg2NbO6 + 0.1 wt% B2O3 ceramics sintered at 925 °C.