Serial sectioning was used to study the diffusion of 54Mn at 843 to 917K. The results could be described by:

D (m2/s) = 8.1 x 10-4 exp[-1.96(eV)/kT]

D.L.Beke, I.Gödény, I.Moricz, F.J.Kedves: Philosophical Magazine Letters, 1989, 60[5], 219-24