It was found that the diffusion coefficient increased from about 10-13 to about 10-10cm2/s when the temperature was increased from 500 to 800K. The activation energy for diffusion was about 0.39eV. The mechanism was suggested to involve the diffusion of Au interstitials.

J.K.O’Brian, J.Bourgoin, F.Strnisa, O.K.Griffith: Colloq. Metall., 1976, 19, 735-50