Depth-dependent magnetisation reversal in Fe/FeMn exchange-biased bilayers determined by conversion electron Mössbauer spectroscopy hysteresis loops

Despite of the extensive research dedicated to the study of the exchange bias (EB) phenomenon, there are still challenges remaining, as the understanding of the mechanisms of magnetisation reversal that occur at the interface between the ferromagnetic (F) and the antiferromagnetic (AF) layer, how the coupling is mediated, and the length scale of the interactions across such interface.