Abstract

Abstract The results of the studies of the linear dipolar relaxation (described by the Debye function) and the nonlinear dipolar relaxation (described by the Coffey function [1]) have been presented. Measurements of the nonlinear relaxation in the frequency range from 1 MHz to 3 GHz have been carried out for diluted solution (1% mol.fr.) of 4,4′-n-hexylcyanobiphenyl (6-CB) in benzene at 25°C. The nonlinear dielectric effect has been measured with a weak alternating field superimposed on a strong quasi-static (∼ 85 Hz) bias field of the amplitude of 1.1·10 7 V/m. The linear dipolar relaxation spectrum corresponding to single Debye function has been obtained for oriented 6-CB in the nematic phase.

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