Ontology highlight
ABSTRACT:
SUBMITTER: Braithwaite J
PROVIDER: S-EPMC6446823 | biostudies-other | 2019 Feb
REPOSITORIES: biostudies-other
Geophysical research letters 20190221 4
Ab initio molecular dynamics simulations predict that CaSiO<sub>3</sub> perovskite melts at 5600 K at 136 GPa, and 6400 K at 300 GPa, significantly higher than MgSiO<sub>3</sub> perovskite. The entropy of melting (1.8 k<sub>B</sub> per atom) is much larger than that of many silicates at ambient pressure and of simple liquids and varies little with pressure. The volume of melting decreases rapidly with increasing pressure, to 3 % at 136 GPa, producing a melting slope that diminishes rapidly with ...[more]