Diffusion in liquid aluminium probed by quasielastic neutron scattering

Abstract

The diffusion coefficient of liquid aluminium has been obtained through coherent quasielastic neutron scattering. The resulting values agree well with calculations derived from the viscosity applying the Stokes-Einstein relation and with ab initio calculations. The temperature dependence of the diffusion constant displays an Arrhenius-type behavior with a single activation energy of 274 meV, consistent with results obtained by utilizing embedded atom method potentials.