  Generalized Maier-Saupe theory (GMST) within Tsallis thermostatistics (TT)
has been used to investigate the second rank order parameter in a nematic
liquid crystal, N-p-methoxybenzylidene p-n-butylaniline (MBBA). Also, the free
energy has been investigated at the nematic-isotropic phase transition
temperature and the effect of the nonextensivity has been demonstrated.
