The impurity diffusion of Mn was studied at 843 to 927K by using the serial sectioning method. Carrier-free 54Mn was obtained by using the photo-nuclear reaction, 56Fe(γ,pn)54Mn. It was found that the results could be described by:

D (cm2/s) = 3.17 x 102 exp[-51.7(kcal/mol)/RT]

S.Fujikawa, K.Hirano: Materials Science Forum, 1987, 13-14, 539-46