Sr3LaNb3O12: A New Low Loss and Temperature Stable A4B3O12-Type Microwave Dielectric Ceramic |
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| Authors: | Liang Fang Hui Zhang Qian Yu Heping Su Bolin Wu Xueming Cui |
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| Affiliation: | Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China;
Guangxi Key Laboratory for Advance Materials and New Preparation Technology, Guangxi University, Nanning 530004, China |
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| Abstract: | The microwave dielectric properties of dense ceramics of a new A4B3O12 type cation-deficient hexagonal perovskite Sr3LaNb3O12 are reported. Single-phase powders can be obtained from the mixed-oxide route at 1320°C and dense ceramics (>96% of the theoretical X-ray density) with uniform microstructures (5–12 um) can be obtained by sintering in air at 1430°C. The ceramic exhibits a moderate dielectric constant ?r～36, a high quality factor Q × f ～45 327 GHz, and a low temperature coefficient of resonant frequency τ f of ?9 ppm/°C. |
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