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Melting of Sn to 1 Mbar

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, , Citation R Briggs et al 2012 J. Phys.: Conf. Ser. 377 012035 DOI 10.1088/1742-6596/377/1/012035

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1 Department of Chemistry and Institute of Shock Physics, Christopher Ingold Laboratories, University College London, 20 Gordon Street, London, WC1H 0AJ, UK

2 European Synchrotron Radiation Facility, BP 220, F-38043, Grenoble, France

3 Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3Q, UK

4 To whom any correspondence should be addressed

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1742-6596/377/1/012035

Abstract

The melting point of Sn was determined between 20-105 GPa using laser-heated diamond anvil cell experiments, coupled with in situ synchrotron X-ray diffraction studies. In agreement with previous LH-DAC speckle experiments, we observe a flattening of the melting slope between P = 40–60 GPa. However, we also observe that this plateau is followed by a further increase in the melting slope above P ∼ 70 GPa, leading to a remarkably high melting point of Tm = 5500 K by P = 105 GPa.

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10.1088/1742-6596/377/1/012035