A new microwave dielectric ceramics for LTCC applications: Li2Mg2(WO4)3 ceramics |
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| Authors: | Mei Guo Yuxia Li Gang Dou Jinuan Lin |
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| Affiliation: | 1. Key Laboratory for Robot and Intelligent Technology of Shandong Province, College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, 266590, People’s Republic of China
2. School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin, 150001, People’s Republic of China
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| 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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