Effect of Hf doping on the dielectric properties of barium zirconate titanate ceramics

摘要：

Pure and Hf-doped BaZr0.2Ti0.8O3 (short for BZT) ceramics are prepared by a conventional solid state reaction method. The crystal structure and dielectric properties of Hf-doped BZT ceramics have been investigated. The results indicate that Hf4+ ions have entered the unit cell maintaining the perovskite structure of solid solution and the pure and Hf-doped BZT ceramics are cubic phase. Addition of hafnium leads to the fall of the phase transition temperature and can decrease the dielectric loss of BZT ceramics at room temperature. When Hf content is more than 0.5 wt.％, the diffuseness of the phase transition enhances with the increasing of Hf content and when Hf content is 3 wt.％, the diffuseness of Hf-doped BZT ceramics is more than that of the pure BZT ceramics.

关键词： Barium zirconate titanate ceramics Hafnium Dielectric properties Diffuse phase transition

作者: Wei Cai Chunlin Fu Jiacheng Gao Xiaoling Deng Weihai Jiang Zebin Lin

作者单位: School of Metallurgical and Materials Engineering, Chongqing University of Science andTechnology, Ch School of Metallurgical and Materials Engineering, Chongqing University of Science andTechnology, Ch College of Materials Science and Engineering, Chongqing University, Chongqing, China School of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, C

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 263-268

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）