Electron spin resonance techniques were used to study the diffusion of Mn2+ in single crystals. The results, for temperatures ranging from 773 to 953K, could be described by:

D (cm2/s) = 3.88 x 10-3 exp[-0.695(eV)/kT]

ESR Determination of the Diffusion and Distribution Coefficients of Mn2+ in NaBr Single Crystals. P.E.Muñoz, O.J.Rubio: Japanese Journal of Applied Physics, 1974, 13[8], 1293-4