The diffusive behavior of 115mCd in 5N-purity single crystals was studied at 441 to 631C. The results could be described by:

D (cm2/s) = 1.04 x 100 exp[-29.7(kcal/mol)/RT]

W.B.Alexander, L.M.Slifkin: Physical Review B, 1970, 1[8], 3274-82