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DIELECTRIC RELAXATION STUDIES OF 4-N-BUTYL-4′-THIOCYANOBIPHENYL (4TCB)

Abstract Complex dielectric permittivity of 4-n-butyl-4′-thiocyanobiphenyl has been investigated in the frequency range from 0.1 Hz to 106 Hz in the smectic E and isotropic liquid phases. In the smectic E phase dispersion with unexpectedly low relaxation frequency has been observed. It was related to the reorientation of the molecules about the short molecular axes and could be described by Arrhenius process. No evidence of preparation to a glass transformation till 246 K has been detected.