Crosssover from Normal Ferroelectrics to Relazor- Spontaneous Relazor to Normal Ferroelectric Transition at the Crossover Compositions

摘要：

Spontaneous relaxor to normal ferroelectric transitions have been reported in a number of lead based relaxor systems,but not in all relaxors. It is unclear about its necessary condition, and about its origin. We systematically studied two representative relaxor systems, PZT based La doped PbZr0.65Ti0.35O3 and BT based system xLa doped Ba0.75Ca0.25TiO3, by dielectric, ferroelectric and XRD measurements and find that in both systems, spontaneous relaxor to normal ferroelectric transitions occur at the crossover composition regime. It is thus concluded that spontaneous relaxor to normal ferroelectric transition is a general effect occuring at the crossover regime between normal ferroelectric and relaxor. Finally a phenomenological interpretation for the origin of spontaneous transition at the crossover composition is provided.

作者: Xiaoqin Ke Lixue Zhang Yu Wang Xiaobing Ren

作者单位: Multi-disciplinary Materials Research Center,Xian Jiaotong University 28 Xianning Road Westem Xi’an, Multi-disciplinary Materials Research Center,Xian Jiaotong University 28 Xianning Road Westem Xi’an,

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 180-184

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）