Low-temperature sintering and microwave dielectric properties of ZnTiO3-based LTCC materials |
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Authors: | Zhenxing Yue Jing Yan Fei Zhao Zhilun Gui Longtu Li |
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Affiliation: | 1. State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China
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Abstract: | The low-temperature sintered microwave dielectric ceramics with composition of ZnTiO3-0.25TiO2 were prepared by adding a small amount of low-melting compounds CuO-V2O5-Bi2O3 (CVB). The phase relationship and dielectric properties as a function of sintering temperature and the additional amount were studied. It is demonstrated that the addition of low-melting CVB can suppress the formation of Zn2TiO4 at low temperature, but decrease the decomposition temperature of ZnTiO3. The sintering temperature has a significant effect on the stability of ZnTiO3 and dielectric properties of sintered ceramics. CVB addition can promote the densification of ceramics through liquid-phase sintering. The dense 2wt% CVB-doped ZnTiO3-0.25TiO2 ceramics prepared at 850 °C have excellent dielectric properties of ??=?30, Q×f?=?32,000 GHz, and τ f ?=?+12 ppm/ °C. |
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