Microwave dielectric properties of H3BO3-doped Ca0.61La0.39Al0.39Ti0.61O3 ceramics
作者： Bin Tang , Zi-xuan Fang , Hao Li , Lin Liu , Shu-ren Zhang
DOI: 10.1007/S10854-014-2399-8
关键词: Materials science 、 Grain boundary 、 Doping 、 Microwave dielectric properties 、 Sintering 、 Analytical chemistry 、 Ceramic matrix composite 、 Ceramic 、 Tetragonal crystal system 、 Lattice (order) 、 Metallurgy
摘要: Preparation and microwave dielectric properties of H3BO3-doped Ca0.61La0.39Al0.39Ti0.61O3 ceramics have been widely investigated. As H3BO3 addition increased from 0.02 to 2.00 wt%, a single phase with tetragonal structure was formed. Boron diffusion location at vacancies grain boundaries in ceramic matrix caused the decrease lattice parameters, resulted liquid sintering mechanism, which effectively improved their relative densities lowered temperature. The low temperature 1,340 °C stable τf value. Microwave wt% were: er = 41.6, Q × f 48,565 GHz −0.66 ppm/°C. They could be considered as promising candidate materials for base stations applications.
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