Jbm. Barrio et al., CALCULATION OF THERMODYNAMIC PROPERTIES FOR THE HIGH-TEMPERATURE PHASE OF C-70 FULLERENE, Physics letters. A, 234(1), 1997, pp. 69-74
An approach of calculating thermodynamic properties of the high-temper
ature modification of C-60 is extended to C-70. For the intermolecular
forces we use the potential proposed by Verheijen et al. which has be
en derived by summing Girifalco potentials over the 25 pairs of intera
cting atomic shells in each pair of molecules. We have calculated the
normal isobar of the fee phase which is dominant at high temperatures
and its spinodal point. Taking into account available information abou
t the vibrational spectrum of the C-70 molecule, thermodynamic propert
ies have been calculated, including components of the elastic tensor.
(C) 1997 Elsevier Science B.V.