Correlation between large electrostrictive strain and relaxor behavior with structural changes induced in P(VDF-TrFE) copolymer by electron irradiation

Vivek Bharti, Yaohong Ye, T. B. Xu, Qiming Zhang

    Research output: Contribution to journalConference article

    1 Scopus citations

    Abstract

    The effect of high energy electron irradiation is investigated on poly(vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), copolymers in the broad range of irradiation doses and temperature. It was found that after a suitable electron irradiation condition, ferroelectric polymer materials show exceptionally high electrostrictive response (> 4%), high dielectric constant (>60) with low dielectric loss over a broad temperature range. In addition, the material after irradiation exhibits many features resembling those of a relaxor ferroelectric, suggesting that the electron irradiation breaks up the coherent polarization domain in a normal ferroelectric material into micro-polar regions that transform the material into a relaxor ferroelectric. These distinct features make this material very attractive for a broad range of applications. In this paper we will review the experimental results on various characteristics of material properties including the dielectric and electrostrictive strain response induced at different temperatures under different electron irradiation conditions and their relation with structural changes observed by X-ray and DSC.

    Original languageEnglish (US)
    Pages (from-to)653-659
    Number of pages7
    JournalMaterials Research Society Symposium - Proceedings
    Volume541
    StatePublished - Jan 1 1999
    EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
    Duration: Nov 30 1998Dec 3 1998

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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