Bonding and short-range order in liquid silicon-carbon alloys
- 1 September 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (10) , 5336-5339
- https://doi.org/10.1103/physrevb.44.5336
Abstract
Simulations of liquid silicon-carbon mixtures show that, at low pressures, the tendency of carbon towards low coordination dominates the overall structural characteristics. As a result silicon coordination is lower than in pure l-Si, accompanied by an enhancement of tetrahedral order and covalent bonding which persist in the liquid. The distribution of atoms is random in contrast to amorphous Si-C alloys. Under high pressures (∼1 Mbar) carbon coordination remains lower than four. At this pressure pure l-C is less dense than diamond.Keywords
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