TY - JOUR
T1 - Nonlinear dielectric spectroscopy of MHPOBC
AU - Tanaka, Koji
AU - Ichikawa, Masatoshi
AU - Kimura, Yasuyuki
N1 - Funding Information:
This work is supported by Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
PY - 2007/1
Y1 - 2007/1
N2 - We apply nonlinear dielectric spectroscopy to an antiferroelectric liquid crystal MHPOBC at various smectic sub-phases. In the SmC* phase, the third-order nonlinear dielectric spectrum 3* is found to be composed of the contributions from ferroelectric soft mode and soft mode of the SmC* phase. The obtained spectrum is well ascribable by the theoretical one calculated by the Landau-type of phenomenological theory. In the SmC* phase, 3* shows a complicated form, and is different from one observed in usual ferroelectric liquid crystals. In the SmCFI1*( SmC*) phase, ferrielectric Goldstone mode with broad distribution of relaxation times is observed in both 1* and 3*.
AB - We apply nonlinear dielectric spectroscopy to an antiferroelectric liquid crystal MHPOBC at various smectic sub-phases. In the SmC* phase, the third-order nonlinear dielectric spectrum 3* is found to be composed of the contributions from ferroelectric soft mode and soft mode of the SmC* phase. The obtained spectrum is well ascribable by the theoretical one calculated by the Landau-type of phenomenological theory. In the SmC* phase, 3* shows a complicated form, and is different from one observed in usual ferroelectric liquid crystals. In the SmCFI1*( SmC*) phase, ferrielectric Goldstone mode with broad distribution of relaxation times is observed in both 1* and 3*.
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U2 - 10.1080/15421400701684020
DO - 10.1080/15421400701684020
M3 - Article
AN - SCOPUS:37749038772
SN - 1542-1406
VL - 477
SP - 195/[689]-204/[698]
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
IS - 1
ER -