Electrical Characteristics and Microstructures of (Gd,Dy)-doped Bi4Ti3O12 Ceramics

摘要：

　　The electrical properties of Bi3.25Dy0.75Ti3O12 (BDT) and Bi3.25Gd0.75Ti3O12 (BGT) ceramics were investigated.The current-voltage curve of the BGT sample exhibits a negative differential resistance behavior,whereas that of the BDT sample exhibits a simple ohmic behavior.The impedance spectrum of the BDT and BGT samples indicate that both consist of semiconducting grain and moderately insulating grain boundary regions.XRD,SEM and EPMA analyses reveal crystalline phase characterized by a Bi-layered perovskite structure of Bi4Ti3O1a and the distribution of every element is uniform.Both BDT and BGT samples exhibit randomly oriented and plate-like morphology.

关键词： Microstructure Impedance Electrical properties Bismuth titanate

作者: Y.H.Cai X.A.Mei M.Chen K.L.Su W.K.An J.Liu

作者单位: Department of Physics,Hunan Institute of Science and Technology,Yueyang,414000,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 88-90

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）