The structure of Fe-Ni amorphous alloys

Abstract The magnetic structures of amorphous Fe-Ni alloys have been studied using fully spin polarised neutron scattering techniques with the IN20 spectrometer at ILL. The results show a large spin-flip scattering which can arise only from a non-collinear structure. In contrast to previous work it is found that Ni atoms carry a magnetic moment and that this is misaligned from the Fe moments by either local crystal field effects or antiferromagnetic exchange interactions.