Interface effects on the magnetic properties of exchange coupled Co/Fe multilayers studied by Brillouin light scattering

Exchange-coupled 5[Co/Fe]/Co with x"5, 10, 15nm multilayers were grown by UHV electron-beam evaporation. The in#uence of the interface magnetic anisotropy and interlayer exchange interaction on the magnetic properties was studied by means of Brillouin light scattering from thermally excited spin waves. Both the Damon}Eshbach surface mode of the total multilayer and bulk standing modes are present in the BLS spectra. A careful study of spin waves frequency dependence on the applied magnetic "eld allowed the determination of the magnetic parameters of the Co/Fe multilayers.