Elastic properties of a van der Waals solid:C60

Abstract
The elastic response (Young’s modulus and internal friction) of solid C60 has been measured in single-crystal specimens as a function of temperature. We determine a Debye temperature of ∼100 K and a room-temperature Young’s modulus of 2.0±0.5×1011 dyn/cm2. The elastic properties are strongly anharmonic and indicate phase transitions at ∼150 and ∼269 K.