Experimental study of nonlinear dielectric relaxation spectra of ferroelectric liquid crystals in the smectic c phase

Yasuyuki Klmura, Reinosuke Hayakawa

研究成果: Contribution to journalArticle査読

34 被引用数 (Scopus)

抄録

Nonlinear dielectric relaxation spectra of two kinds of ferroelectric liquid crystals (FLC) are investigated in the chiral smectic C (SmC*) phase. The linear spectrum shows the relaxation of Debye type and the third-order nonlinear spectrum also shows the relaxation of Debye type generalized to the nonlinear case. The third-order nonlinear dielectric increment is found to be negative, which indicates that the dielectric nonlinearity of FLCs in the SmC* phase mainly originates from the saturation of molecular dipole moments induced by the applied electric field. The profiles of linear and nonlinear spectra remain almost unchanged throughout the SmC* phase. In the vicinity of the SmA-SmC* phase transition temperature, the linear spectrum shows the critical behavior of Curie- Weiss type and the third-order spectrum shows a sharp peak.

本文言語英語
ページ(範囲)4571-4577
ページ数7
ジャーナルJapanese Journal of Applied Physics
32
10 R
DOI
出版ステータス出版済み - 10 1993
外部発表はい

All Science Journal Classification (ASJC) codes

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

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