Melting of Diamond at High Pressure
- 14 December 1990
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 250 (4987), 1547-1549
- https://doi.org/10.1126/science.250.4987.1547
Abstract
Melting of diamond at high pressure and the properties of liquid carbon at pressures greater than 1 megabar were investigated with a first-principles molecular dynamics technique. The results indicate an increase of the diamond melting temperature with pressure, which is opposite to the behavior of silicon and germanium. This is contrary to long-held assumptions, but agrees with recent experiments, and has important implications for geology and astrophysics. As is the case for the solid phase of carbon at low temperature, which changes greatly with pressure from graphite to diamond, the structural and bonding properties of liquid carbon vary strongly with pressure.Keywords
This publication has 37 references indexed in Scilit:
- Bonding and disorder in liquid siliconPhysical Review Letters, 1989
- Carbon: The nature of the liquid statePhysical Review Letters, 1989
- Stability and electronic properties of complex structures of silicon and carbon under pressure: Density-functional calculationsPhysical Review B, 1987
- Carbyne Forms of Carbon: Evidence for Their ExistenceScience, 1985
- Response : Carbyne Forms of Carbon: Evidence for Their ExistenceScience, 1985
- Melting of DiamondScience, 1984
- Prediction of Electronic Interlayer States in Graphite and Reinterpretation of Alkali Bands in Graphite Intercalation CompoundsPhysical Review Letters, 1983
- Carbyne Forms of Carbon: Do They Exist?Science, 1982
- Efficacious Form for Model PseudopotentialsPhysical Review Letters, 1982
- The controversial carbon solid–liquid–vapour triple pointNature, 1978