Entropy of melting: Its effect on the liquid-liquid phase change of carbon

Graphite melting experiments reported recently suggest that the enthalpy of melting of graphite decreases slowly and linearly with pressure, unlike our previous suggestion, which included a liquid-liquid phase change like those observed in other systems. We have investigated the possibility that thi...

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Bibliographic Details
Published in:Journal of applied physics 1995-05, Vol.77 (9), p.4804-4806
Main Authors: van Thiel, Mathias, Ree, Francis H.
Format: Article
Language:English
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Summary:Graphite melting experiments reported recently suggest that the enthalpy of melting of graphite decreases slowly and linearly with pressure, unlike our previous suggestion, which included a liquid-liquid phase change like those observed in other systems. We have investigated the possibility that this smooth pressure dependence could eliminate the liquid-liquid phase change. Our analysis shows that the available experimental enthalpies of melting cannot rule out such a phase change. An accurate determination of the (P,T) melting line curvature can shed light on the presence or absence of such a phase change.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.359400