The diffusive of Cu was studied at 500 to 800C. The results could be described by:

D (cm2/s) = 8.7 x 10-4 exp[-12.5(kcal/mol)/RT]

A.D.Abramenkov, V.V.Slezov, L.V.Tanatarov, Y.M.Fogel: Fizika Tverdogo Tela, 1970, 12[10], 2929-33