Abstract
High-energy ball milling of Fe–Mn elemental powder mixtures has been carried out for different Mn concentrations, ranging from 0 to 90%. Mössbauer spectroscopy of 57Fe and perturbed angular correlations with 111In – implanted at 400 keV into pills made from the milled powders – have been used to investigate the structure of the milled samples. Clear changes of the hyperfine spectra occur at Mn concentrations of 15–20% and above 70%, indicating extended concentration ranges of α-Fe and γ-Fe(Mn), compared to the equilibrium phase diagram. Detailed information on additional lower hyperfine fields due to nearest neighbor Mn atoms has been obtained in the α-Fe phase containing up to 20% Mn .
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Uhrmacher, M., Kulinska, A., Baldokhin, Y.V. et al. Hyperfine Study on Mechanically Alloyed Fe–Mn Systems. Hyperfine Interactions 136, 327–332 (2001). https://doi.org/10.1023/A:1020577523577
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DOI: https://doi.org/10.1023/A:1020577523577