Abstract
Earlier reported diffraction data for silicon at pressures of 4, 8, 14, and 23 GPa and temperatures 50 K above the melting point are used to develop models of liquid silicon (2997 particles in a cubic central box with periodic boundary conditions) and reconstruct the effective pair potential, which is found to depend little on density and temperature. It is shown that, between 8 and 14 GPa, the structure of liquid silicon becomes markedly denser. The calculated self-diffusion coefficient of liquid silicon decreases almost twofold with increasing pressure.
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