Giant electrostriction and relaxor ferroelectric behavior in electron- irradiated poly(vinylidene fluoride-trifluoroethylene) copolymer

Qiming Zhang, Vivek Bharti, X. Zhao

Research output: Contribution to journalReview articlepeer-review

1397 Scopus citations

Abstract

An exceptionally high electrostrictive response (~4 percent) was observed in electron-irradiated poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer. The material exhibits typical relaxor ferroelectric behavior, suggesting that the electron irradiation breaks up the coherent polarization domain (all-trans chains) in normal ferroelectric p(VDF-TrFE) copolymer into nanopolar regions (nanometer-size, all-trans chains interrupted by trans and gauche bonds) that transforms the material into a relaxor ferroelectric. The expanding and contracting of these polar regions under external fields, coupled with a large difference in the lattice strain between the polar and nonpolar phases, generate an ultrahigh strain response.

Original languageEnglish (US)
Pages (from-to)2101-2104
Number of pages4
JournalScience
Volume280
Issue number5372
DOIs
StatePublished - Jun 26 1998

All Science Journal Classification (ASJC) codes

  • General

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