Study of the structure of crystalline fullerene C$_{70}$ at pressures up to 33 GPa

The results of the study of the effect of high pressure on the structure of fullerene C$_{70}$ crystals are presented. X-ray structural analysis and Raman spectroscopy of fullerene C$_{70}$ samples were carried at atmospheric pressure, as well as at pressures up to 33 GPa. High-pressure chambers with optically transparent diamond anvils were used for the study. Several phase transformations occurring under the action of high pressure, caused by the orientational structural transition and amorphization of fullerene crystals, were established.