Recent advances in ferroelectric polymer thin films for memory applications

T. Furukawa, Y. Takahashi, Takashi Nakajima

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

An overview of ferroelectric VDF/TrFE copolymer thin films is presented based on our recent work on their phase transition behavior and polarization switching dynamics. These properties originate in the hierarchical structures consisting of monomer dipoles, all-trans conformation, parallel chain packing and crystalline orientation in thin films. Successive loss of intermolecular and intramolecular orders yields multiple phase transitions from a ferroelectric phase to a molten phase via anti-ferroelectric and paraelectric phases. Polarization switching dynamics are shown to depend on a variety of factors not only applied field strength but also electrode, substrate, thickness and wave form of applied field. These results are discussed in relation to their hierarchical structures as well as nonvolatile memory applications.

Original languageEnglish
JournalCurrent Applied Physics
Volume10
Issue number1 SUPPL. 1
DOIs
Publication statusPublished - 2010 Jan 1

Keywords

  • Ferroelectric polymer
  • Phase transition
  • Polarization switching
  • Vinylidene fluoride copolymer

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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