Abstract
A novel microwave dielectric ceramics Li2Mg2(WO4)3 (LMW) for low-temperature co-fired ceramics (LTCC) application were prepared by the conventional solid-state sintering method. Densification, phases, microstructure and microwave dielectric properties of the Li2Mg2(WO4)3 ceramics were investigated. The optimal sintering temperature of dense Li2Mg2(WO4)3 ceramic approximately ranges from 825 to 875 °C for 3 h. The ceramic specimens fired at 875 °C for 3 h exhibits excellent microwave dielectric properties: ε r = 7.72, Q × f = 29,600 GHz (f = 6.0 GHz), and τ f = −15.5 ppm/°C. Moreover, the Li2Mg2(WO4)3 ceramics has a chemical compatibility with Ag during cofiring, which makes it a promising ceramic for LTCC technology application.
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Acknowledgments
This research was supported by Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20133718120009), the Natural Science Foundation of Shandong Province, China (Grant No. ZR2013FQ002), the China Postdoctoral Science Foundation funded project (2014M551935), the Qingdao Postdoctoral Science Foundation funded project, the National Natural Science Foundation of China and the Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents.
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Guo, M., Li, Y., Dou, G. et al. A new microwave dielectric ceramics for LTCC applications: Li2Mg2(WO4)3 ceramics. J Mater Sci: Mater Electron 25, 3712–3715 (2014). https://doi.org/10.1007/s10854-014-2079-8
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DOI: https://doi.org/10.1007/s10854-014-2079-8