FMR STUDIES OF COBALT THIN-FILMS DEPOSITED BY MOCVD

Ferromagnetic resonance has been used to investigate the magnetic anis otropy in thin films of cobalt and Co/ZnO multilayers deposited by MOC VD. In general, the samples exhibited an overall in-plane magnetic ani sotropy, the strength of which decreased with decreasing cobalt layer thickness. A buffer layer of ZnO was found to decrease the strength of the anisotropy with respect to a film of the same thickness deposited onto glass. In some relatively thin single films, two resonance modes were observed. This was also the case in multilayers deposited onto a ZnO buffer layer. The origins of these modes are discussed.