Dielectric properties and Phase Transitions of Binary Nematic Mixturesin CCH Liquid Crystal series

Abstract

The phase transition behaviors of dimer (CCH-2)-monomer (CCH-3,4,5,7) mixtures in CCH liquid crystal series are investigated. Large deviations from the theoretical expectation are found at the upper and lower sides of the nematic range, and also found a special critical ratios of 75 % CCH-2 and 25 % CCH-7 mixture which is only nematic range and has no smectic phase.