Abstract
Different methods for analyzing Mössbauer spectra of metallic glasses are discussed and applied to a room temperature spectrum of Metglas 2605SC. In the case of direct line shape fitting, yielding only the average hyperfine interaction parameters, a Pearson VII distribution profile is proposed which is somewhat superior to Gaussian and pseudo-Lorentzian profiles. For the methods based on the magnetic hyperfine field distribution, it is observed that different assumptions to account for the spectrum asymmetry yield similar hyperfine field distributions. However, the best spectral fitting is obtained by considering a combined effect of an anisotropic hyperfine field and a linear correlation between the isomer shift and the magnetic hyperfine field.
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