Critical behavior of dielectric permittivity and nonlinear dielectric effect in the isotropic phase of nematogens

Aleksandra Drozd-Rzoska; Sylwester J. Rzoska; Jerzy Ziolo

doi:10.1117/12.299973

1 February 1998 Critical behavior of dielectric permittivity and nonlinear dielectric effect in the isotropic phase of nematogens

Aleksandra Drozd-Rzoska, Sylwester J. Rzoska, Jerzy Ziolo

Author Affiliations +

Proceedings Volume 3318, Liquid Crystals: Physics, Technology, and Applications; (1998) https://doi.org/10.1117/12.299973
Event: Liquid Crystals, 1997, Zakopane, Poland

Abstract

The paper shows that the behavior of dielectric permittivity and its changes in a strong electric field can be described in the way analogous to that applied in critical binary solutions. Basing on measurement in 4,4-n-hexylcyanobiphenyl and 4,4-n-tetracyanobiphenyl (4CB) it was possible to portray the temperature behavior of dielectric permittivity and NDE from T_c + 50 K. IN the case of 4CB the satisfied description was possible despite the fact that the sample crystallizes before reaching the clearing point. NDE tests was conducted for the measurement frequency f equals 70 kHz, what allowed to avoid the in fluence of relaxation processes on results.

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Aleksandra Drozd-Rzoska, Sylwester J. Rzoska, and Jerzy Ziolo "Critical behavior of dielectric permittivity and nonlinear dielectric effect in the isotropic phase of nematogens", Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); https://doi.org/10.1117/12.299973

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