Low angle polarized neutron diffraction from Tb/Fe multilayers

Abstract Low angle polarized neutron scattering experiments have been performed on a Tb(61 A)/Fe(55A) multilayer. The evolution of the intensities ( I + and I - ) of the first peak shows that the average magnetizations of Tb and Fe are in the applied field direction. The intensities of the second and the third peaks indicate that there is an interface effect which is going along with the terbium magnetization. It is presumably the result of the antiferromagnetic coupling between iron and terbium.