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VOLUME 76 | ISSUE 9 | PAGE 655 Alternative approach for evalution of Mössbauer spectra of nanostructured ferromagnetic alloys within generalized two-lewel relaxation model M. A. Chuev1, O. Hupe2, A. M. Afanas'ev1, H. Bremers2, J. Hesse2 1Institute of Physics and Technology RAS, 117218 Moscow, Russia 2Institut für Metallphysik und Nukleare Festkörperphysik, Technische Universität 38106 Braunschweig, Germany PACS: 61.18.Fs, 61.46.+w, 71.70.Gm, 75.60.Jp, 76.80.+y Abstract The simplest treatment of the complex 57Fe Mössbauer absorption spectra of nanostructured Fe-Cu-Nb-B alloys within the recently-developed generalised two-level relaxation model has been successfully performed. This model applied for a system of superparamagnetic particles allows one to take into account the interparticle interaction in a simpler form and to describe qualitatively a specifically asymmetric shape of Mössbauer lines with sharp outer and smeared inward sides when the conventional two-level relaxation model fails. The approach is actually an alternative way in order to evaluate the Mössbauer spectra of nanostructured ferromagnetic alloys without taking into consideration a rather wide and diverse distribution over the particle sizes. Download PS file (GZipped, 177.5K)  |  Download PDF file (255.4K)