Ferroelectricity in ultrathin films of polyvinylidene fluoride and its copolymer

T. Nakajima, Y. Mabuchi, T. Morimoto, T. Furukawa, S. Okamura

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

We succeeded in observing the ferroelectric polarization reversal of VDF/TrFE thin films down to 9.7 nm in thickness. Reduced thickness below 56 nm induced marked reduction in P r and ε r0. These results indicate the existence of the surface dead layer in VDF/TrFE which induces the polarization switch back due to the generated depolarization field. To fabricate a thin PVDF film with smooth surface is more difficult owing to the coexistence of the different polymorphs. We obtained uniform PVDF film consisting of the spherical grains by spin-coating with solution temperature of 120 °C. After the application of electric pulses to enhance the polarization, clear polarization reversal with P r of 0.06 C/m 2 was observed for 60-nm-thick PVDF film.

本文言語English
ホスト出版物のタイトル2011 - 14th International Symposium on Electrets, ISE 2011
ページ169-170
ページ数2
DOI
出版ステータスPublished - 2011 12 1
イベント2011 IEEE 14th International Symposium on Electrets, ISE 2011 - Montpellier, France
継続期間: 2011 8 282011 8 31

出版物シリーズ

名前Proceedings - International Symposium on Electrets

Other

Other2011 IEEE 14th International Symposium on Electrets, ISE 2011
国/地域France
CityMontpellier
Period11/8/2811/8/31

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学
  • 材料化学

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