The melting curves of tin, uranium, cadmium, thallium and indium metals under pressure

Abstract

The pressure effects on melting lines of tin, uranium, cadmium, thallium and indium metals have been studied by using the Lindemann melting criterion, the recent well-established Grüneisen parameter, and the third order Birch-Murnaghan equation-of-state up to pressure of 140 GPa. The analytic expression of volume-dependent melting temperature has been derived. Our results are in good agreement with laser-heating diamond-anvil cell measurement but lower than recent shock compression work. This method provides a quick approach to estimate the melting point of tin metal under pressure. Our reported melting temperatures increase the database of high-pressure melting, and could be used to analyze and verify the future high-pressure dynamic shock compression as well as diamond-anvil cell static compression experiments.