Short range order in elemental liquids of column IV.

Autor: Mayo, M., Shor, S., Yahel, E., Makov, G.
Předmět:
Zdroj: Journal of Chemical Physics; 2015, Vol. 142 Issue 19, p1-9, 9p, 6 Charts, 10 Graphs
Abstrakt: The short range order (SRO) in liquid elements of column IV is analysed within the quasi-crystalline model across a wide range of temperatures. It is found that l-Si, Ge, and Sn are well described with a beta-tin like SRO. In contrast, Pb retains a bcc-like SRO similar to other simple elemental liquids. However, a distinction is found between the SRO in Si and Ge and that in Sn, where the latter has a more rigid structure. This difference persists across the entire temperature range examined but is overcome in Si at pressures above 8 GPa, where the liquid structure evolves towards that of Sn. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index