The diffusivity of 59Fe was determined by using serial sectioning methods. The data for 1207 to 1488K could be described by:

D (cm2/s) = 4.47 x 10-3 exp[-27.9(kcal/mol)/RT]

It was deduced that the correlation factors were negative, and it was suggested that interstitial/vacancy pairs and ω-phase embryos might be rate-controlling.

R.V.Patil, G.P.Tiwari, B.D.Sharma: Philosophical Magazine A, 1981, 44[3], 717-33