Microwave Dielectric Properties of MLi2Ti6O14 [M=Ba and Sr] Ceramics and Their Compatibility with Sliver |
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| Authors: | Congxue Su Weishuang Fang Zhenhai Wei Ying Tang Liang Fang |
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| Affiliation: | State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Guangxi Universities Key Laboratory of Non‐Ferrous Metal Oxide Electronic Functional Materials and Devices, College of Material Science and Engineering, Guilin University of Technology, , Guilin, 541004 China |
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| Abstract: | Microwave dielectric properties of Li‐containing orthorhombic compounds with the composition of MLi2Ti6O14 (M = Ba and Sr) were investigated. The ceramics were synthesized by the conventional solid‐state reaction route. The optimized sintering temperatures for the BaLi2Ti6O14 and SrLi2Ti6O14 ceramics are 1025°C and 1000°C, respectively. Favorable microwave dielectric properties were obtained with moderate εr of 31.7 and 33.6, quality factor Q × f values of 23 300 (at 7.3 GHz) and 8700 GHz (at 6.8 GHz), and low‐temperature coefficient of resonant frequency (τf) values of ?15.4 and ?2.7 ppm/°C for BaLi2Ti6O14 and SrLi2Ti6O14 ceramics, respectively. The addition of BaCu(B2O5) can effectively reduce the sintering temperature below 930°C without degrading the microwave dielectric properties. Compatibility with Ag electrode indicates these materials could be applied to low‐temperature cofired ceramic devices. |
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