| Autor: |
Solozhenko, Vladimir L., Mukhanov, Vladimir A., Brazhkin, Vadim V. |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
High Pressure Research, 40 [4] 488-494 (2020) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1080/08957959.2020.1832487 |
| Popis: |
Melting of orthorhombic boron silicide B6Si has been studied at pressures up to 8 GPa using in situ electrical resistivity measurements and quenching. It has been found that in the 2.6-7.7 GPa range B6Si melts congruently, and the melting curve exhibits negative slope of -31(2) K/GPa that points to a higher density of the melt as compared to the solid phase. At very high temperatures B6Si melt appears to be unstable and undergoes disproportionation into silicon and boron-rich silicides. The onset temperature of disproportionation strongly depends on pressure, and the corresponding low-temperature boundary exhibits negative slope of -92(3) K/GPa which is indicative of significant volume decrease in the course of B6Si melt decomposition. |
| Databáze: |
arXiv |
| Externí odkaz: |
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