# On melting of boron subnitride B13N2 under pressure

## TL;DR

This study investigates the melting behavior of boron subnitride B13N2 under high pressure, revealing incongruent melting above 2.6 GPa and a positive melting curve slope indicating lower melt density.

## Contribution

It provides the first in situ measurements of B13N2 melting under pressure, detailing the melting curve and phase behavior up to 8 GPa.

## Key findings

- B13N2 melts incongruently above 2.6 GPa
- Melting curve has a positive slope of 31(3) K/GPa
- Melt density is lower than solid phase

## Abstract

Melting of rhombohedral boron subnitride B13N2 has been studied in situ at pressures to 8 GPa using synchrotron X-ray diffraction and electrical resistivity measurements. It has been found that above 2.6 GPa B13N2 melts incongruently, and the melting curve exhibits positive slope of 31(3) K/GPa that points to a lower density of the melt as compared to the solid phase.

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Source: https://tomesphere.com/paper/1705.03753