Dielectric Properties of Barium Titanate Ceramics Modified by Cuo in Different Methods

摘要：

CuO has been doped solely and together with BaO and SiO2 into barium titanate by mixing and calcination.X-ray diffraction showed that the sample doped by CuO-BaO has stable second hexagonal phase while the samples doped by CuO,CuO-SiO2 were of a pure perovskite phase.For CuO-BaO doping,the Curie temperature was decreased accompanied with higher εmax ;while for CuO doping and CUO-SiO2 codoping,the Curie temperature was increased with εmax decreased.The difference can be explained considering that Cu2+ ion could not only incorporate into the BaTiO3 lattice,but also assemble in the boundary phase when CuO was doped solely.Besides,the mechanisms of CuO doping and SiO2 doping could happen at one time.

关键词： Barium titanate ceramics dielectric property CuO BaO SiO2 doping

作者: Zhenjiang Shen Yu Wang Wanping Chen Helen Lai Wan Chan Lina Bing

作者单位: College of Physics and Electronic Engineering,Hainan Normal University,Hainan 571158,China Department of Applied Physics and Materials Research Center,The Hong Kong Polytechnic

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Advanced Material Research(2012 第二届先进材料研究国际会议 ICAMR2012)

会议地点: 成都

会议语种:英文

页码: 276-280

在线出版日期: 2012-01-07（万方平台首次上网日期，不代表论文的发表时间）