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Title: High electrostriction and relaxor ferroelectric behavior in proton-irradiated poly(vinylidene fluoride-trifluoroethylene) copolymer
Authors: Guo, Shishang
Zhao, Xingzhong
Zhou, Qifa
Chan, Helen L. W.
Choy, Chung-loong
Subjects: Polymer blends
Relaxor ferroelectrics
Proton effects
Dielectric polarisation
Dielectric hysteresis
Internal stresses
Issue Date: 26-Apr-2004
Publisher: American Institute of Physics
Source: Applied physics letters, 26 Apr. 2004, v. 84, no. 17, p.3349-3351
Abstract: Effect of proton irradiation on poly(vinylidene fluoride-trifluoroethylene) 56/44 mol% copolymer has been studied using a Mach-Zehnder heterodyne interferometer, polarization hysteresis loop and dielectric constant measurements. The electrical-field-induced strain response of the copolymer after proton bombardment follows a quadratic electrostriction relationship. The electrostrictive coefficient at 5 kHz is similar to that obtained with a bimorph-based strain sensor, but at a much lower electric field. The polarization hysteresis after proton irradiation is reduced considerably and the dielectric constant exhibits typical relaxor behavior, which is suggested as the cause of the observed results.
Rights: © 2004 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in S. Guo et al. Appl. Phys. Lett. 84, 3349 (2004) and may be found at
Type: Journal/Magazine Article
ISSN: 0003-6951
Appears in Collections:AP Journal/Magazine Articles

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