Dielectric Investigations of Relaxor Reduced Poly(Vinylidene Fluoride-Trifluoroethylene) Copolymer in DC Bias Electric Field

被引：3

作者：

Erste, Andreja ^{[1
]}

Chen, Xian-Zhong ^{[2
,3
]}

Jia, Cheng-Liang ^{[2
,3
]}

Shen, Qun-Dong ^{[2
,3
]}

Bobnar, Vid ^{[1
]}

机构：

[1] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

[2] Nanjing Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Nanjing, Jiangsu, Peoples R China

[3] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem, MOE, Nanjing, Jiangsu, Peoples R China

来源：

FERROELECTRICS | 2012年 / 427卷

关键词：

VINYLIDENE FLUORIDE; FERROELECTRICS; POLYMERS;

D O I：

10.1080/00150193.2012.674443

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Properties of newly-developed relaxor reduced poly(vinylidene fluoride-trifluoroethylene) copolymer have been investigated by measurements of temperature and frequency dependent dielectric response in dc bias electric field. It has been found that dc bias field effectively blocks the ac conductivity. The analysis of dielectric dynamics show that the Vogel-Fulcher parameters, obtained from either peaks in epsilon '' (T) or frequency dependent dielectric data, are identical within experimental error. Furthermore, the decrease of Vogel-Fulcher temperature and increase of activation energy on increasing dc bias field suggest that the nonlinear dielectric susceptibility dominantly influences the relaxor dynamics in dc bias electric fields.

引用

页码：157 / 162

页数：6

共 14 条

[1] A type of poly(vinylidene fluoride-trifluoroethylene) copolymer exhibiting ferroelectric relaxor behavior at high temperature (∼100 °C) [J].