H.A. Dürr, M. Münzenberg¹, W. Felsch¹, S.S. Dhesi^2
1I. Physikalisches Institut, Universität Göttingen, Germany
²ESRF, Grenoble Cedex, France

The magnetic domain configurations of Fe 3d spins in Fe/CeH2 multilayers was measured by soft x-ray resonant magnetic scattering. The interface region could be probed by setting up x-ray standing waves due to the multilayer periodicity. Resolving first- and second-order magnetic scattering contributions we show that the latter probes directly the magneto-crystalline anisotropy which is dominated by the Fe interface layers causing a spin reorientation transition when the temperature is lowered.