| Numéro |
J. Phys. France
Volume 41, Numéro 4, avril 1980
|
|
|---|---|---|
| Page(s) | 341 - 344 | |
| DOI | https://doi.org/10.1051/jphys:01980004104034100 | |
J. Phys. France 41, 341-344 (1980)
DOI: 10.1051/jphys:01980004104034100
Solid State Institute, Technion-Israel Institute of Technology, Haifa, Israel
6130G - Orientational order of liquid crystals; electric and magnetic field effects on order.
7722C - Permittivity (dielectric function).
Key words
dielectric properties of liquids and solutions -- organic compounds -- permittivity -- smectic liquid crystals
DOI: 10.1051/jphys:01980004104034100
Dielectric anisotropy in the smectic phases of liquid crystals
L. BenguiguiSolid State Institute, Technion-Israel Institute of Technology, Haifa, Israel
Abstract
We measured the dielectric anisotropy Δε of two compounds (507 and 508) of the p-pentoxy-benzylidene-alkylaniline series, in their nematic and smectic phases : A and B for 508, A, B and C for 507. Δε increases strongly in the smectic phases. We interpret this by an increase of the dipole-dipole correlations.
Résumé
On a mesuré l'anisotropie diélectrique Δε de deux composés (507 et 508) appartenant à la série p-pentoxybenzylidène-alkylaniline, dans les phases nématiques et smectiques : A et B pour le 508 ; A, B et C pour le 507. Δε croît fortement dans les phases smectiques. Cet effet est interprété par une augmentation des corrélations dipôle-dipôle.
6130G - Orientational order of liquid crystals; electric and magnetic field effects on order.
7722C - Permittivity (dielectric function).
Key words
dielectric properties of liquids and solutions -- organic compounds -- permittivity -- smectic liquid crystals