Abstract
A contribution originating from the Co/Pd and Fe/Pd interfaces to the magneto-optical Kerr effect (MOKE) rotation is analyzed for Co and/or Fe films grown on a Pd-buffer-monolayer on Cu(001). A clear increase of the MOKE signal in comparison to the Co(Fe) films grown directly on Cu(001) is detected. An interpretation is supported by similar observations for Co films grown on Pd(110) and Pd(001). In particular, the sign reversal of the Kerr loops with increasing thickness of the Co(Fe) films is discussed. Magneto-optical effects are separated from the real magnetization and its dependence on the film thickness.
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