Electrode metal species effect on switching characteristics of VDF/TrFE copolymer ultrathin films

Takashi Nakajima, Yoshiyuki Takahashi, Takeo Furukawa

Research output: Contribution to conferencePaperpeer-review

Abstract

The 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 50-330nm-thick films with switching time independent of the film thickness. We conclude that the thinning-induced increase in switching time reported by many researchers 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
Pages4488-4489
Number of pages2
Publication statusPublished - 2005 Dec 1
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period05/9/2005/9/22

Keywords

  • Electrode
  • Ferroelectric polymer
  • Switching characteristics
  • Thin film
  • Vinylidene fluoride

ASJC Scopus subject areas

  • Engineering(all)

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