The effect of magnetic ordering upon diffusion in the α-phase was investigated, at 673 to 1163K, by using several techniques: serial sectioning, heavy-ion Rutherford back-scattering spectrometry, Rutherford back-scattering spectrometry. The Arrhenius plot was extended to cover 10 decades (table 30, figure 5); thus making clear the variation in the slope at the Curie temperature and a slight upwards curvature in the ferromagnetic region. The parameter which took account of the effect of magnetic order on vacancy mobility during Sn diffusion was quite similar to that observed in the case of Fe self-diffusion, where no magnetic interaction between the impurity and the matrix was postulated.

D.N.Torres, R.A.Perez, F.Dyment: Acta Materialia, 2000, 48[11], 2925-31