Abstract
The effects of BaO-B2O3-SiO2 (BBS) frit on sinterability, microstructure and microwave dielectric properties of Li2(Mg0.3Zn0.7)Ti3O8-0.12TiO2 (LMZT) ceramics were systematically investigated. BBS frit can effectively lower the sintering temperature of LMZT ceramics to below 900 °C. Suitable BBS frit addition can accelerate the growth of the LMZT grains while inhibit the abnormal grain growth at the same time. The LMZT ceramics with 2 wt% BBS frit sintered at 900 °C for 3 h show homogeneous microstructure composed of 5–10 μm grains and excellent dielectric properties: e r = 24.1, Q × f = 21,980 GHz, τ f = −4.1 ppm/ °C. It is compatible with Ag electrodes, which makes it a potential candidate material for low temperature co-fired ceramics technology application.
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