Electrical properties and equations of state in solid C-60 at room temperat
ure and high pressure have been studied in a diamond anvil cell using capac
itance and resistance measurements and a piston-cylinder type device using
P-V measurements, respectively. Experimental results by capacitance and P-V
measurements indicate that solid C-60 also undergoes a phase transition at
room temperature and a lower pressure, about 2GPa. The phase transition ma
y be from a face-centered-cubic to a simple-cubic structure.