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

Yasuyuki Klmura, Reinosuke Hayakawa

研究成果: ジャーナルへの寄稿記事

34 引用 (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.

元の言語英語
ページ(範囲)4571-4577
ページ数7
ジャーナルJapanese Journal of Applied Physics
32
発行部数10 R
DOI
出版物ステータス出版済み - 10 1993

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Dielectric relaxation
Liquid crystals
Ferroelectric materials
liquid crystals
Dipole moment
Superconducting transition temperature
Phase transitions
Electric fields
dipole moments
transition temperature
nonlinearity
saturation
electric fields
profiles

All Science Journal Classification (ASJC) codes

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

これを引用

Experimental study of nonlinear dielectric relaxation spectra of ferroelectric liquid crystals in the smectic c phase. / Klmura, Yasuyuki; Hayakawa, Reinosuke.

:: Japanese Journal of Applied Physics, 巻 32, 番号 10 R, 10.1993, p. 4571-4577.

研究成果: ジャーナルへの寄稿記事

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