Ferroelectric polymers with large electrostriction; Based on semicrystalline VDF/TrFE/CTFE terpolymers

T. C. Chung, A. Petchsuk

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

This paper discusses a new ferroelectric polymer with large electrostrictive response (-4%) at ambient temperature, which is based on a processable semicrystalline terpolymer comprising vinylidene difluoride (VDF), trifluoroethylene (TrFE), and chlorotrifluoroethylene (CTFE). This VDF/TrFE/CTFE terpolymer was prepared by a combination of bulk polymerization process and a borane/oxygen initiator at ambient temperature. The incorporated bulky CTFE units in the terpolymer seem to reduce the crystalline domain size and move the ferroelectric-paraelectric (FP) phase transition to near ambient temperature with a very small energy barrier. Some terpolymers exhibited common ferroelectric relaxor behaviors with a broad dielectric peak that shifted toward higher temperatures as the frequency increased, and a slim polarization hysteresis loop at near the dielectric peak (around ambient temperature) that gradually evolved into a normal ferroelectric polarization hysteresis loop with reduced temperature.

Original languageEnglish (US)
Pages (from-to)135-143
Number of pages9
JournalFerroelectrics, Letters Section
Volume28
Issue number5-6
StatePublished - Dec 1 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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