We report x-ray powder diffraction studies on RbxC60 and KxC60. It is shown that at room temperature there exist stoichiometric compounds in the RbxC60 and KxC60 systems at the x = 1 composition. Their equilibrium structures are pseudo body centered orthorhombic. The C60-C60 intermolecular separation (9.1 angstrom) is the shortest among the known alkali-fullerides. A first order phase transition is observed at about 380 K from the high temperature fcc phase to the room temperature orthorhombic phase.
|Journal||Journal De Physique. IV : JP|
|Publication status||Published - Nov 1 1994|
|Event||Proceedings of the European Symposium on Frontiers in Science and Technology with Synchrotron Radiation - Aix-en-Provence, Fr|
Duration: Apr 5 1994 → Apr 8 1994
ASJC Scopus subject areas
- Physics and Astronomy(all)