Preparation and dielectric characterization of BaLaAlO4 ceramics
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In the present work, BaLaAlO4 ceramics with orthorhombic structure similar to K2SO4 in space group P212121 were prepared by a solid state sintering process. The dense BaLaAlO4 ceramics with minor amount of secondary phase have a low dielectric loss and a temperature stable dielectric constant with obvious frequency dependence. A dielectric constant around 15 was obtained at 12 GHz in the present ceramics together with a Qf value over 5,000 GHz.
KeywordsBaLaAlO4 Microwave dielectric properties Ceramics Sintering Microstructures
This work was partially supported by National Science Foundation of China under grant numbers 50272058, 50332030 and Chinese National Key Project for Fundamental Researches under grant number 2002CB613302.