PERTURBED-ANGULAR-CORRELATION STUDY OF 3D TRANSITION-METAL MULTILAYERS

The present paper aims to show that a perturbed angular correlation (P AC) investigation gives access to unique information on the (interface ) magnetism in MBE-grown very thin magnetic multilayers. For the Fe/Cr (1 0 0) multilayer system we observe, below a critical Cr-thickness of 5.0 nm, a collapse of the spin-density-wave (SDW) ordening in chromiu m. While the magnetization in the Fe-layer is in-plane, the Cr-magneti sation in thicker layers is out-of-plane. In the Fe/Co (1-10) system, the observation of transferred magnetic hyperfine field satellites and their temperature dependence leads to the determination of an oscilla ting magnetic moment profile at the Fe/Co interface as well as a struc ture model for the superlattice.