Eur. Phys. J. B 7, 129-136 (1999)
https://doi.org/10.1007/s100510050595

Theoretical and computer simulation study of density fluctuations in liquid binary alloys

Institute for Condensed Matter Physics, 1 Svientsitskogo Street, Lviv 290011, Ukraine

Received: 27 February 1998
Revised: 24 July 1998
Accepted: 27 July 1998
Published online: 15 January 1999

Abstract

The dynamical properties of liquid alloys are investigated by means of memory function equations and molecular-dynamics simulation. A simple model for the second-order memory function in a binary liquid, based on Mori's memory function formalism, is proposed and applied in numerical calculations of the time correlation functions and dynamic structure factor of liquid K_0.7Cs_0.3 and K_0.3Cs_0.7 alloys. Obtained results are discussed in comparison with the results of computer simulations.