Research PapersNo Access

EFFECT OF DC BIAS ON DIELECTRIC RESPONSE IN RELAXOR FERROELECTRIC TERPOLYMER FILMS

Hunan Provincial Key Laboratory of Wind Generator and Its Control, School of Electrical and Information Engineering, Hunan Institute of Engineering, No. 17, Shuyuan Road, Yuetang District, Xiangtan 411101, P. R. China

E-mail Address: tianli5222003@aliyun.com

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J. SUN

E-mail Address: 357477191@qq.com

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J. L. WANG

Shanghai Institute of Technical Physics, Chinese Academy of Sciences, No. 500, Yutian Road, Hongkou District, Shanghai 200083, P. R. China

E-mail Address: jlwang@mail.sitp.ac.cn

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, and

Y. P. LI

E-mail Address: 15298183@qq.com

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https://doi.org/10.1142/S0218625X17500020Cited by:1 (Source: Crossref)

Abstract

The permittivity as a function of temperature and dc bias in the poly(vinylindene fluoride-trifluorethylene-chlorofluoroethylene) [P(VDF-TrFE-CFE)] terpolymer was measured and analyzed using both the Vogel–Fulcher and universal Curie–Weiss law. The decreased permittivity with increasing dc bias has been observed. The lower permittivity in dc bias is due to the suppressed diffusion of phase transition rather than the nonlinear dielectric contribution. Furthermore, the suppression of phase diffusion can be explained by the molecular conformation conversion in dc bias.

Keywords:

PACS: 77.55.fp, 77.80.jk

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