Dipole Cluster State and Dielectric Relaxation in Relaxor Ferroelectrics

摘要：

　　The Ginzburg-Landau theory on ferroelectrics with random field induced by dipole defects is studied using Monte Carlo simulation in order to investigate the possible dipole clustering and freezing behaviors as well as the dielectric relaxation of relaxor ferroelectrics.The dipole clustering above the transition temperature and the cluster-freezing far below this temperature are identified.The intrinsic correspondence between dipole-clustering/freezing and the multi-peaked time-domain distribution of dielectric relaxation is established.

关键词： Ferroelectric relaxor Relaxation spectrum Ginzburg-Landau theory

作者: Q.C.Li J.-M.Liu

作者单位: Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China International Center for Materials Physics,Chinese Academy of Sciences,Shenyang,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: 565-569

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）