Abstract
In this work, Mössbauer spectroscopy and X-ray powder diffraction (XRD) have been employed to study various types of the point defect formation in B2-structured intermetallic phases of the Fe–Al system as a function of Al concentration. We present the values of the 57Fe isomer shift and quadruple splitting for the components describing the point defect in the local environment of a Mössbauer nuclide. The concentrations of Fe vacancies and anti-site Fe atoms substituting Al (Fe-AS) are determined. The results show that an increase in Al content causes an increase in vacancy and Fe-AS concentrations.
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