Energetics and stability of diamondlike amorphous carbon
Journal
Physical review letters
Date Issued
1992
Author(s)
DOI
10.1103/PhysRevLett.68.1854
Abstract
Simulations of diamondlike amorphous carbon formed by quenching the liquid under high pressure indicate that two distinctly different dense phases exist. The as-quenched phase is metastable and mostly fourfold coordinated. Upon annealing, it converts into a more stable structure with the majority of atoms having threefold coordination. Both structures are consistent with experimental findings. The annealed phase is clearly distinguished from the low-coordinated network of evaporated ±-C.