Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer

Takashi Nakajima, Yoshiyuki Takahashi, Takeo Furukawa

Research output: Contribution to conferencePaperpeer-review

Abstract

The time domain measurements of ferroelectric polarization reversal were performed for spin-coated 42-nnvthick vinylidene fluoride/trifluoroethylene copolymer films deposited with an Au electrode. The observed fastest switching time down to -100°C is 100ns which is shorter than the dielectric relaxation time associated with crystalline dipole motions. For this fast polarization reversal, it seems as though the nuclei of polarization are generated independently to the thermal fluctuations of dipoles. However, the activation fields of this film depend on its permittivity at 10MHz. This result indicates that the faster components of dipole fluctuations cause nucleation because the dielectric relaxation times are broadly distributed.

Original languageEnglish
Pages3849-3850
Number of pages2
Publication statusPublished - 2006 Dec 1
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/2006/9/22

Keywords

  • Ferroelectric polymer
  • Polarization reversal
  • Temperature dependence
  • Thin film
  • Vinylidene fluoride

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Temperature dependence of nanosecond switching characteristics in ultrathin films of VDF/TrFE copolymer'. Together they form a unique fingerprint.

Cite this