Interesting magnetic behavior of Fe:Al disordered alloys

The low temperature magnetic properties of FeAl alloys, near equiatomic composition, are a matter of contention from both theoretical perspectives and experimental measurements. There does not seem to be any consensus regarding these. In an attempt to find the source of contradictory behavior, we made a detailed study by both bulk magnetization and local probe by Mössbauer effect on a well characterized sample. It was interesting to find that while the former showed distinct magnetic phases, the local probe failed to resolve any magnetization on Fe atom down to very low temperature. This contradictory behavior suggested non-local moment formation in the system.