The diffusion of Mg into thin films was studied at 650 to 740C. The results could be described by:

D (cm2/s) = 1.9 x 10-5 exp[-1.74(eV)/kT]

A.E.Gershinskii, E.G.Kostov: Fizika Metallov i Metallovedenie, 1970, 30[6], 1315-7