Internal friction and elastic properties of the high pressure-induced phases of solid C60

Solid C60 is a new promising material made from giant high-symmetric carbon clusters. Though C60 molecules are extremely stable at ambient conditions, heat treatment under high pressures induces transformations to other phases, in which some weak van der Waal-type bonding between C60 molecules is replaced with covalent sp3 bonds. Many new C60 high pressure phases (HP) demonstrate a set of unique physical properties including mechanical and elastic ones. This paper is an analytic review of the experimental measurements of the elastic and dissipative properties of solid C60 (from C60 single crystal to C60 ultrahard phase).