ZnTiO3 Doping Effect on Dielectric Properties of CCTO Ceramics via a Molten Salt Process

摘要：

　　CaCu3Ti4O12 (CCTO) powder was prepared by solid-state reaction.CCTO-ZnTiO3 composites were prepared by reaction of CCTO powder with molten ZnCl2 in air,at 400℃.The products were examined by X-ray diffraction and scanning electron microscopy.The electric properties of CCTO-ZnTiO3 composite ceramic were investigated.It is shown that the ceramic composites have higher grain-boundary resistivity and nonlinear coefficient.The addition of Zn mainly formed in the form of ZnTiO3 also affected the low frequency capacitance values,reduced the CCTO ceramic dielectric loss,which showed a Schottky-type nature of potential barrier.Moreover,the mechanisms involved in the NBLC model were discussed,where it is working with the IBLC model.

关键词： CaCu3Ti4O12 Composites Electrical properties

作者: Rong Yu Zeliang Cao Hao Xue Zhaoxian Xiong

作者单位: College of Materials,Xiamen University,Xiamen,361005,P.R.China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1231-1234

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）