The diffusive behavior of 198Au in 5N-purity single crystals was studied at 423 to 609C. The results could be described by:

D (cm2/s) = 7.7 x 10-2 exp[-27.0(kcal/mol)/RT]

W.B.Alexander, L.M.Slifkin: Physical Review B, 1970, 1[8], 3274-82