Processing and Properties of Ferroelectric Bi4-xLaxTi3O12 Ceramics

摘要：

　　Bi4-xLaxTi3O12 (BLT,x=0,0.75,1,2) ceramic powders were prepared with sol-gel and solid phase reaction processes,respectively.BLT powders were synthesized after decarbonization at 300℃ for lh followed by calcination at 800℃ for 2h.The ceramics synthesized with cold isostatic pressing and sintering at 1150℃ exhibit a perovskite-like structure.The influence of sintering parameters and La doping content on density,microstructure and dielectric properties of the BLT were discussed.With the increase of La doping content in Bi4-xLaxTi3O12,dielectric constant increases and dielectric loss gradually decreases.The dielectric constant and dielectric loss of Bi4-xLaxTi3O12 (x=2) are 132.7 and 0.012 at 100 KHz,respectively.

关键词： Bi4-xLaxTi3O12 La doping Microstructure Dielectric constant

作者: Wang Wen Ke Hua Zhang Deng-guo Jia De-chang Zhou Yu

作者单位: Institute for Advanced Ceramics,Department of Materials Science and Engineering,Harbin Institute of Technology,Harbin150001,P.R.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: 106-108

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）