The diffusivity of 191Pt, 195mPt and 197Pt tracers in monocrystalline samples was determined by using sectioning techniques. The results could be described by:

D (cm2/s) = 5.6 x 10-1 exp[-55.5(kcal/mol)/RT]

at 1149 to 1352K.

G.Neumann, M.Pfundstein, P.Reimers: Philosophical Magazine A, 1982, 45[3], 499-507