  We study thermodynamic properties of the high-temperature modification of
fullerites on the basis of the Girifalco intermolecular potential. In the
present work, using the Lindemann's melting criterion we estimate a possible
melting curve Tm(P) of C60 fullerite. To take into account the lattice
anharmonicity that has strong effect at T >700 K, we use the correlative method
of unsymmetrized self-consistent field. The melting curve for C60 fullerite has
been calculated from the melting point at normal pressure estimated at 1500 K
up to 15 kbar which corresponds to 4000 K. The temperature dependence of the
melting pressure is approximated very well by the Simon equation. We have
calculated its parameters for C60. The temperature dependence of the molar
volume along the melting curve is discribed by logarithmic function.
