2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22123We have used the density-functional theory to locate the freezing transitions and calculate the values of freezing parameters for a system of long elongated molecules which interact via the Gay-Berne pair potential. The pair correlation functions of isotropic phase which enter in the theory as input informations are found from the Percus-Yevick integral equation theory. At low temperatures the fluid freezes directly into the smectic A phase on increasing the density. The nematic phase is found to stabilize in between the isotropic and smectic A phases only at high temperatures and high densities. These features of the phase diagram are in good agreement with the computer simulation results.Revtex4 format inculding 5 figuresStatistical MechanicsSoft Condensed Mattertext