Abstract
Using new experimental data on the pressure dependence of the melting temperature of iron, the value of the high temperature limit of the Grüneisen parameter,γο, has been derived. The calculation has been performed within the theory of melting of metals recently proposed by Schlosseret al., (1989,Phys. Rev.,B40, 5929), with and without modifications due to taking into account the pressure dependence of the ratioγ/V. The results of both calculations are in agreement with values quoted in recent literature. Possible causes of the discrepancies are discussed. A change ofγ occuring atP ≅ 120–130 GPa indicates the occurence of a phase transition, whose existence is confirmed within a particular semiclassical theory of dense matter.
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Čelebonović, V. A note on the melting of iron under high pressure. Earth Moon Planet 61, 39–45 (1993). https://doi.org/10.1007/BF00619138
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DOI: https://doi.org/10.1007/BF00619138