M-2,M-3 edge core-level magnetic circular dichroism measurements of Cu/Co multilayers

We have carried out the magnetic circular dichroism (MCD) measurements in t he VUV region near M-2,M-3 absorption edges of Cu and Co for Cu/Co multilay ers in order to investigate the perpendicular magnetization of the system. Circularly polarized SR light was incident almost normal to the sample surf ace and the reflected light was detected, corresponding to the information about perpendicular magnetic moments. The MCD spectrum of the magnetic laye rs at Co M-2,M-3 edges showed one negative peak. Although Cu is non-magneti c, a similar MCD profile was obtained for Cu M-2,M-3 edges. These results i ndicate that the perpendicular magnetic moments of non-magnetic Cu are indu ced near the Cu/Co interfaces of multilayers and the directions of the magn etic moments in Cu and Co layers are parallel with each other along the dir ection of applied magnetic field.