Mössbauer line-broadening methods were used to study the diffusion of 57Fe at 890 to 930K. The results could be described by:

D (cm2/s) = 1.1 x 104 exp[-2.3(eV)/kT]

S.Mantl, W.Petry, K.Schroeder, G.Vogl: Physical Review B, 1983, 27[9], 5313-31