Ion-beam sputtering methods were used to study the diffusion of 197Pt in single crystals at 850 to 1265K. The results could be described by:

D (cm2/s) = 5 x 10-2 exp[-2.67(eV)/kT]

G.Rein, H.Mehrer, K.Maier: Physica Status Solidi A, 1978, 45[1], 253-62