Effect of conductivity on the dielectric characteristics of cyano-ethyl ester of poly(vinyl alcohol)

被引：0
|
作者：
V. F. Borodzyulya
S. V. Myakin
N. T. Sudar’
N. B. Sheiko
A. G. Rodionov
M. M. Sychov
机构：
[1] St. Petersburg State Polytechnical University,
[2] St. Petersburg State Technological Institute (Technical University),undefined
来源：
Physics of the Solid State | 2013年 / 55卷
关键词：
Dielectric Permittivity; Double Electric Layer; Constant Voltage; Vinyl Alcohol; Dielectric Characteristic;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Frequency dependences of the real and imaginary parts of the dielectric permittivity of films prepared from cyano-ethyl ester of poly(vinyl alcohol) have been studied within a frequency range of 25 Hz to 1 MHz at temperatures from 266 to 323 K. The frequency dependence of the total conductivity of the polymer dielectric has been calculated. At T < Tg, it has been established to follow a power law course with an exponent close to unity, which evidences hopping pattern of the conductivity. The anomalous increase of the dielectric losses and dielectric permittivity in the low-frequency range at T ≥ Tg is attributed to formation of double electric layers at the electrode-polymer boundary.
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页码：1647 / 1650
页数：3
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