The serial sectioning technique was used to investigate the diffusion of 54Mn in single crystals of undoped and Mn-doped material. The data for undoped samples at 213 to 300C could be described by:

D (cm2/s) = 5.34 x 10-4 exp[-0.80(eV)/kT]

The data for undoped samples at 300 to 430C could be described by:

D (cm2/s) = 7.71 x 100 exp[-1.27(eV)/kT]

The data for doped (2.1mol%Mn) samples at 200 to 320C could be described by:

D (cm2/s) = 2.1 x 10-2 exp[-0.56(eV)/kT]

R.Süptitz, R.Weidmann: Physica Status Solidi, 1968, 27[2], 631-8

The best linear fit to the solute diffusion data ([348] to [365]) yields:

Mn: Ln[Do] = 0.87E – 22.7 (R2 = 0.99)