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: ε 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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Acknowledgments
The authors gratefully acknowledge the financial support from the National High Technology Research and Development Program of China (863 Program) (No. 2013AA030701) and Zhejiang Province Innovation Group Program (2011R09010).
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Tong, J., Zhou, J., Yang, H. et al. Low temperature sintering of Li2(Mg0.3Zn0.7)Ti3O8-0.12TiO2 microwave dielectric ceramics with controllable grain size. J Mater Sci: Mater Electron 25, 1293–1297 (2014). https://doi.org/10.1007/s10854-014-1725-5
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DOI: https://doi.org/10.1007/s10854-014-1725-5