Current-voltage and ferroelectric Characteristics of Er2O3-doped Bi4Ti3O12 Ceramics
The electrical properties of Er2O3-doped bismuth titanate,Bi4-xErxTi3O12 (BET) ceramics prepared by a conventional electroceramic technique were investigated.XRD analyses revealed Bi-layered perovskite structure in all samples.SEM micrographs showed randomly oriented and plate-like morphology.For the samples with x=0.4 and 1.0 the current-voltage characteristics exhibited negative differential resistance behaviors and their P-E hysteresis loops were characterized by large leakage current,whereas for the samples with x=0.6 and 0.8 the current-voltage characteristics showed simple ohmic behaviors and their P-E hysteresis loops were the saturated and undistorted hysteresis loops.The remanent polarization (Pr) and coercive field (Ec) of the BET ceramic with x=0.8 were above 20μC/cm2 and 65KV/cm,respectively.
ferroelectric film bismuth titanate doping
C.Q.Huang X.B.Liu X.A.Mei J.Liu
School of Physics and Electronics,Hunan Institute of Science and Technology,Yueyang,414000,China
国际会议
桂林
英文
162-165
2012-07-16（万方平台首次上网日期，不代表论文的发表时间）