The diffusivity of Pt was determined by monitoring changes in lattice spacing at 650 to 950C. It was found that the results could be described by:

D (cm2/s) = 6.0 x 100 exp[-56.9(kcal/mol)/RT]

R.L.Fogelson, Y.Y.Ugai, I.A.Akimova: Fizika Metallov i Metallovedenie, 1975, 39[2], 447-8