Structure parameters in mixed liquid crystals (I). Layer thickness of the smectic mixed phases B in the binary system of ethyl‐4‐(4‐ethoxy‐benzylidene‐amino)‐cinnamate and terephthylidene‐bis‐(4‐n‐butyl‐aniline)

Abstract

Abstract The thickness of the smectic layers in binary liquid crystalline mixed phases of the phase type B are measured in dependence on the concentration. Both components have different B‐phase structures. In the part of the binary system with a smectic polymorphism BA the long molecular axes are perpendicular to the layer planes. If the polymorphism is changed by the appearance of a mixed phase of the type C, i.e. the smectic polymorphism BCA exists, there occurs a transition into the B‐phase structures with tilted axes, the tilt angle of which is changed continuously with the concentration.