Dielectric Study of Pressure Induced fcc-sc Phase Transition in Fullerene C₆₀

Abstract

Phase transition in polycrystalline fullerene C60 from fcc phase to a simple cubic phase sc induced by hydrostatic pressure up to 0.5 GPa was studied by dielectric method. Pressure coefficient dTc/dp = 144 ± 8K/GPa was determined. This value is consistent with pressure coefficients obtained with other experimental techniques.

Dielectric properties of C60under high pressure

“…Although there have been many investigations of the dielectric properties of C 60 , we are aware of only one study under high pressure [8]. This study was only concerned with finding the slope of the fcc-sc phase transition under pressure up to 0.5 GPa, and no information was obtained on the dielectric loss and thus on the reorientational dynamics.…”