Abstract
About one atomic layer of Pt was deposited on a Ni(110) surface to investigatethe magnetic anisotropy of the interface. The magnetization of Pt atoms wasprobed with resonant magnetic x-ray diffraction and the magneto-optical Kerreffect was utilized to probe the average magnetization of the Ni in thenear-surface region. Our results show that the magnetization of the Pt atoms inthe surface plane depends on the direction of the applied field. While the [1̄10]direction shows a hysteresis cycle of the Pt film typical of an easy magnetizationaxis, the [001] direction has a hard axis behaviour. In contrast, the Ni(110)substrate shows similar cycles for the two directions. A possible explanation,based on the formation of an anisotropic superstructure, as observed by means ofsurface x-ray diffraction, is suggested.
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