On melting of boron phosphide under pressure
Vladimir L. Solozhenko, Vladimir A. Mukhanov
TL;DR
This study investigates the melting behavior of cubic boron phosphide under pressures up to 9 GPa, revealing congruent melting above 2.6 GPa and a negative melting curve slope indicating higher melt density.
Contribution
It provides the first detailed measurements of BP melting under high pressure, including the melting curve and density implications.
Findings
BP melts congruently above 2.6 GPa
Melting curve has a negative slope of -60(7) K/GPa
Melt density exceeds solid density
Abstract
Melting of cubic boron phosphide, BP has been studied at pressures to 9 GPa using synchrotron X-ray diffraction and electrical resistivity measurements. It has been found that above 2.6 GPa BP melts congruently, and the melting curve exhibits negative slope -60(7) K/GPa, which is indicative of a higher density of the melt as compared to the solid phase.
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