Abstract
We report the low temperature noncollinear magnetic behavior of electron beam evaporated ultrathin Fe/Al multilayer (ML) structures. Investigations have been carried out with ML samples with Fe-layer thicknesses in a range of 10–40 Å and Al-layer thickness of 10 Å. The structural studies show that heavy atomic interdiffusion between Fe and Al layers occurs at the interface, resulting MLs of different complicated structures according to different sublayer thicknesses Brajpuriya, et al.., [Eur. Phys. J. B 51, 131 (2006)]. The magnetic measurements show that these films are “re-entrant” systems and not ordinary ferromagnets as often assumed. The obtained results, interestingly, indicate a transition from ferromagnetic state to a low temperature disordered state where a collective frozen magnetic state with grain moments oriented randomly occurs. We interpret the observed low temperature noncollinear magnetic behavior to be due to random freezing of grain moments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
