Abstract
We show in this Letter that heating under high pressure drives to new distorted crystalline phases that are metastable at room temperature and pressure. We report three different distortions that are essentially characterized by two nearest neighbor distances, and Å. The excellent accord with theoretical calculations supports the view that these new carbon phases can be understood as the long range order polymerization of through cycloaddition reactions that are at the origin of the shorter intermolecular distances.
- Received 7 September 1994
DOI:https://doi.org/10.1103/PhysRevLett.74.278
©1995 American Physical Society