弛豫铁电体电场诱发顺电到铁电的相变研究  

Field-Induced Paraelectric to Ferroelectric Phase Transition in Relaxror Ferroelectrics

作　　者：包鹏[1] 严锋[1] 李伟[1] 戴玉蓉[1] 朱劲松[1] 沈惠敏[1] 王业宁[1] 

机构地区：[1]南京大学物理系固体微结构国家重点实验室,江苏南京210093

出　　处：《哈尔滨理工大学学报》2002年第6期18-19,21,共3页Journal of Harbin University of Science and Technology

摘　　要：制备了低PbTiO_3含量的Pb(Mg_1/3Nb_2/3),O_3-PbTiO_3陶瓷样品,测量了它们的低频介电性能,研究了偏压降温-自然升温(FC-ZFH)过程的介电常数和压电谐振频率.根据实验结果,对弛豫铁电体中电场诱发的铁电相变机理进行了讨论.The caremic samples of Pb(Mg1/3Nb2/3)O3 - PbTiO3 with low PbTiO3 doping were prepared and the dielectric properties were measured. The dielectric properties and resonance frequency were also measured in the zero field heating-field cooling process. The possible mechanism of the field induce ferroelectric phase transition is discussed.

关 键 词：电场诱发 顺电 铁电 相变 弛豫铁电体 低频介电性能 介电常数 

分 类 号：TM221[一般工业技术—材料科学与工程]