Influence of Mo in the Ni sublayers on the magnetization of Ni/Ti neutron supermirrors

For a polarized neutron beam in a neutron guide with a polarization parallel to the side walls of the guide, depolarization of the beam can occur at the top and bottom walls due to the in-plane magnetization of the Ni/Ti supermirrors. We alloyed the Ni-sublayers with Mo in order to suppress the magnetization of the layers. Magnetization measurements of the NiMo/Ti supermirrors indicate a Mo-dependency on the in-plane magnetization. For increasing Mo concentration the magnetization is decreased. Polarized neutron reflectivity measurements show no depolarizing for in-plane magnetization parallel to the neutron spin as normally is the case in the side walls of a neutron guide. A polarized neutron beam with polarization perpendicular to the magnetization of the layers is partially depolarized