Nonlinear dielectric spectroscopy of antiferroelectric liquid crystals in various smectic phases

Yasuyuki Kimura, Hiroshi Isono

研究成果: Contribution to journalConference article査読

抄録

Nonlinear dielectric spectroscopy in frequency domain has been applied to antiferroelectric liquid crystals in various smectic phases including antiferroelectric SmC*A, SmC*F12 and incommensurate SmC*α phases. We have observed different characteristic third-order nonlinear dielectric spectra ε* 3 in respective phases. In SmC*A and SmC* F12 phases, nonlinear dielectric response originated from Goldstone-like fluctuation with long relaxation time along the helical structure have been observed, which cannot be usually observed in linear spectrum. In the SmC*α phases, we have observed the critical behavior of soft mode that condenses in the SmC* α phase by ε*3. The obtained nonlinear dielectric spectra are discussed by using phenomenological models for respective relaxation.

本文言語英語
ページ(範囲)[231]/87-[237]/93
ジャーナルFerroelectrics
309-312
DOI
出版ステータス出版済み - 12 1 2004
イベント9th International Conference on Ferroelectric Liquid Crystals, FLC 2003 - Dublin, アイルランド
継続期間: 8 24 20038 29 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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