Threshold fields in the dc bias dependence of dielectric responses of relaxor ferroelectric terpolymer films

被引:9
作者
Meng, X. J. [1 ]
Dkhil, B. [2 ]
Liu, P. F. [1 ,2 ]
Wang, J. L. [1 ]
Sun, J. L. [1 ]
Chu, J. H. [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
[2] CNRS, UMR 8580, Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides SPMS, F-92290 Chatenay Malabry, France
基金
上海市自然科学基金;
关键词
ELECTRIC-FIELD; PHASE-TRANSITIONS; BEHAVIOR; VISCOSITY; CRYSTALS; POLYMERS;
D O I
10.1063/1.3259375
中图分类号
O59 [应用物理学];
学科分类号
摘要
The dc bias dependence of dielectric properties has been investigated for poly (vinylindene fluoride-trifluoroethylene-chlorofluoroethylene) relaxor terpolymer films. The frequency dependence of the temperature of the permittivity maximum, T-m, was analyzed using the Vogel-Fulcher (VF) relation. Two threshold fields, similar to 30 and 160 MV/m were found in the electric-field dependence of T-m. T-m shows a minimum at similar to 30 MV/m and a maximum at similar to 160 MV/m. The VF parameters activation energy E-a and freezing temperature T-f respectively show a maximum and a minimum at similar to 25 MV/m. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3259375]
引用
收藏
页数:4
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