Novel Low‐Firing Forsterite‐Based Microwave Dielectric for LTCC Applications |
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| Authors: | Jie Zhang Zhenxing Yue Yu Luo Xiaohua Zhang Longtu Li |
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| Affiliation: | State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China |
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| Abstract: | A novel low‐temperature sintering microwave dielectric based on forsterite (Mg2SiO4) ceramics was synthesized through the solid‐state reaction method. The effects of LiF additions on the sinterability, phase composition, microstructure, and microwave dielectric properties of Mg2SiO4 were investigated. It demonstrated that LiF could significantly broaden the processing window (~300°C) for Mg2SiO4, and more importantly the sintering temperature could be lowered below 900°C, maintaining excellent microwave dielectric properties simultaneously. The 2 wt% LiF‐doped samples could be well‐sintered at 800°C and possessed a εr ~ 6.81, a high Q×f ~ 167 000 GHz, and a τf ~ ?47.9 ppm/°C, having a very good potential for LTCC integration applications. |
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