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Title: Effects of proton irradiation on the structure and properties of poly(vinylidene fluoride-trifluoroethylene) 80/20 mol.% copolymer
Authors: Lau, ST
Leung, KY
Chan, HLW 
Choy, CL 
Sundaravel, B
Wilson, I
Keywords: Electrostriction
P(VDF-TrFE) copolymer
Phase transition
Proton irradiation
Relaxor ferroelectric
Issue Date: 2002
Publisher: Taylor & Francis Inc.
Source: Ferroelectrics, 2002, v. 273, p. 9-14 How to cite?
Journal: Ferroelectrics 
Abstract: Films of poly(vinylidene fluoride-trifluoroethylene) 80/20 mol.% copolymer have been irradiated with 200 Mrad of 3 MeV protons. The effects of irradiation on the electric field induced strain, polarization hysteresis, dielectric constant, lattice spacing and phase transition behavior have been investigated. The irradiated copolymer exhibits a typical relaxor ferroelectric behavior, indicating that the proton irradiation breaks up the coherent polarization domains in the normal ferroelectric copolymer into nano-sized regions, thereby converting the material into a relaxor ferroelectric. The transformation of the nano-sized regions between nonpolar and polar phase induced by an external electric field gives rise to a large lattice strain and hence a high electrostrictive response.
ISSN: 0015-0193
EISSN: 1563-5112
DOI: 10.1080/00150190211774
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