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The Kerr effect in the vicinity of the transition from the isotropic to smectic a phase. / Polushin, S. G.; Rogozhin, V. B.; Ryumtsev, E. I.; Lezov, A. V.

в: Russian Journal of Physical Chemistry A, Том 80, № 7, 01.07.2006, стр. 1016-1020.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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@article{e50bfedbca8d4522af9be0da5bf48683,
title = "The Kerr effect in the vicinity of the transition from the isotropic to smectic a phase",
abstract = "The equilibrium electrooptical effect in the isotropic phase of seven liquid crystalline substances (4-n-decyloxy-4′-cyanobiphenyl, carbosilane dendrimer of the fourth generation with cyanobiphenyl terminal fragments, and the fourth, fifth, sixth, seventh, and tenth members of the homologous series of 4-n-acylphenylene 4′-n-alkoxybenzoates) was studied. The smectic A phases were found to exhibit weaker divergence of the Kerr constant in the vicinity of the T c isotropic melt-liquid crystal phase transition temperature compared with the nematic phases. The difference between T c and the temperature T*of the virtual second-order phase transition varied from 3.2 to 19.0 K for the smectic A phases, which substantially exceeded the value (T c-T*) ≤ 1 K for the nematic phases. A theory of the electrooptical properties of isotropic melts in the vicinity of the T c temperature of the phase transition from the isotropic to smectic A phase is developed. An equation relating the T c-T*difference to the phenomenological coefficients of the expansion of the Helmholtz energy of an isotropic melt into a series in powers of the coordination and orientational order parameters is obtained.",
author = "Polushin, {S. G.} and Rogozhin, {V. B.} and Ryumtsev, {E. I.} and Lezov, {A. V.}",
year = "2006",
month = jul,
day = "1",
doi = "10.1134/S0036024406070028",
language = "English",
volume = "80",
pages = "1016--1020",
journal = "Russian Journal of Physical Chemistry A",
issn = "0036-0244",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "7",

}

RIS

TY - JOUR

T1 - The Kerr effect in the vicinity of the transition from the isotropic to smectic a phase

AU - Polushin, S. G.

AU - Rogozhin, V. B.

AU - Ryumtsev, E. I.

AU - Lezov, A. V.

PY - 2006/7/1

Y1 - 2006/7/1

N2 - The equilibrium electrooptical effect in the isotropic phase of seven liquid crystalline substances (4-n-decyloxy-4′-cyanobiphenyl, carbosilane dendrimer of the fourth generation with cyanobiphenyl terminal fragments, and the fourth, fifth, sixth, seventh, and tenth members of the homologous series of 4-n-acylphenylene 4′-n-alkoxybenzoates) was studied. The smectic A phases were found to exhibit weaker divergence of the Kerr constant in the vicinity of the T c isotropic melt-liquid crystal phase transition temperature compared with the nematic phases. The difference between T c and the temperature T*of the virtual second-order phase transition varied from 3.2 to 19.0 K for the smectic A phases, which substantially exceeded the value (T c-T*) ≤ 1 K for the nematic phases. A theory of the electrooptical properties of isotropic melts in the vicinity of the T c temperature of the phase transition from the isotropic to smectic A phase is developed. An equation relating the T c-T*difference to the phenomenological coefficients of the expansion of the Helmholtz energy of an isotropic melt into a series in powers of the coordination and orientational order parameters is obtained.

AB - The equilibrium electrooptical effect in the isotropic phase of seven liquid crystalline substances (4-n-decyloxy-4′-cyanobiphenyl, carbosilane dendrimer of the fourth generation with cyanobiphenyl terminal fragments, and the fourth, fifth, sixth, seventh, and tenth members of the homologous series of 4-n-acylphenylene 4′-n-alkoxybenzoates) was studied. The smectic A phases were found to exhibit weaker divergence of the Kerr constant in the vicinity of the T c isotropic melt-liquid crystal phase transition temperature compared with the nematic phases. The difference between T c and the temperature T*of the virtual second-order phase transition varied from 3.2 to 19.0 K for the smectic A phases, which substantially exceeded the value (T c-T*) ≤ 1 K for the nematic phases. A theory of the electrooptical properties of isotropic melts in the vicinity of the T c temperature of the phase transition from the isotropic to smectic A phase is developed. An equation relating the T c-T*difference to the phenomenological coefficients of the expansion of the Helmholtz energy of an isotropic melt into a series in powers of the coordination and orientational order parameters is obtained.

UR - http://www.scopus.com/inward/record.url?scp=33750196574&partnerID=8YFLogxK

U2 - 10.1134/S0036024406070028

DO - 10.1134/S0036024406070028

M3 - Article

AN - SCOPUS:33750196574

VL - 80

SP - 1016

EP - 1020

JO - Russian Journal of Physical Chemistry A

JF - Russian Journal of Physical Chemistry A

SN - 0036-0244

IS - 7

ER -

ID: 50363168