Intrinsic switching characteristics of ferroelectric ultrathin vinylidene fluoride/trifluoroethylene copolymer films revealed using Au electrode

Takashi Nakajima, Ryosuke Abe, Yoshiyuki Takahashi, Takeo Furukawa

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Time-domain measurements of ferroelectric polarization reversal were conducted for spin-coated ultrathin vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. It was found that full polarization reversal occurs in 50-330-nm-thick films that have switching time independent of the film thickness. We conclude that the thinning-induced increase in switching time reported previously is not a general feature of this copolymer but is specific to an Al-electrode-deposited sample. The intrinsic switching characteristics revealed here include the broadening of the switching time distribution with thinning, which is attributed to the nonuniform electric field caused by surface roughness.

Original languageEnglish
Pages (from-to)L1385-L1388
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume44
Issue number42-45
DOIs
Publication statusPublished - 2005 Dec 1

Keywords

  • AFM
  • Au electrode
  • Ferroelectric thin film
  • Surface roughness
  • Switching characteristics
  • Vinylidene fluoride/trifluoroethylene copolymer

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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