A Avazpour - Department of Physics, College of Sciences, Yasouj University, Yasouj, Iran

The equilibrium properties of non- isotropic molecular liquids less studied as compared withspherical molecular liquids. In these systems, molecular interactions depend on separationdistance and orientation of molecules. Properties of non- spherical molecular liquid crystalshave been studied by integral equation, computer simulation and density functional theory(DFT) [1- 4] .Allen [5], Cheng and coworkers [6] calculated phase stability of isotropic andnematic oblate ellipsoids using computer simulation.In this work, kerr constant [1], phase stability limit and transition density of I-N of hardprolate ellipsoids are calculated by using DFT and new direct correlation (DCF) [7].