Piezothermal studies in the vicinity of the smectic A-nematic transition in 4'-n-octyloxy-4-cyanobiphenyl (8OCB)

Abstract

The thermal expansion (a) of 4'-n-octyloxy-4-cyanobiphenyl (80CB) has been studied as a function of pressure along different isotherms by the piezothermal method. In the vicinity of the smectic A-nematic transition, α shows an anomaly which becomes less pronounced with increasing temperature.