Preparation and characterization of CdWO4 microwave dielectric ceramics by using traditional solid state method
GUO Baochun, LIU Peng*, CHEN Shuang, YANG Tao
(College of Physics and Information Technology, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
CdWO4 with pure phase was synthesized by traditional solid state method at low temperature, and its microwave dielectric properties has been investigated. The results show that the pure CdWO4 powders can be obtained by ball milling CdO&WO3 mixtures 10 h, dried at 200 ℃ for 2 h. The CdWO4 ceramics sintered at 1 075~1 200 ℃ gained high relative density with monoclinic structure. The cadmium tungstate ceramics sintered at 1 150 ℃ exhibited better microwave dielectric properties of Q×f=41 000 GHz, εr=12.8 and τf=-14×10-6 ℃-1.
KeyWords:
CdWO4; microwave dielectric ceramics; traditional solid state method
