The diffusive behavior of Au in 4N5-purity single crystals was studied at 450 to 600C. The results could be described by:

D (cm2/s) = 2.7 x 10-1 exp[-28.9(kcal/mol)/RT]

M.Beyeler, F.Maurice, R.Seguin: Mémoires Scientifiques de la Revue de Métallurgie, 1970, 67, 295-302