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Magnetism of ordered Sm/Co(0001) surface structures

J. E. Prieto·O. Krupin·S. Gorovikov·K. Doebrich·G. Kaindl·K. Starke
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Abstract

The epitaxial system Sm/Co(0001) was studied for Sm coverages up to 1 monolayer (ML) on top of ultrathin Co/W(110) epitaxial films. Two ordered phases were found for 1/3 and 1 ML Sm, respectively. The valence state of Sm was determined by means of photoemission and magnetic properties were measured by magneto-optical Kerr effect. We find that 1 ML Sm causes a strong increase of the coercivity with respect to that of the underlying 10 ML Co film. Element-specific hysteresis loops, measured by using resonant soft x-ray reflectivity, show the same magnetic behaviour for the two elements.

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J. E. Prieto, O. Krupin, S. Gorovikov, K. Doebrich, G. Kaindl, K. Starke. 2005-10-10. Magnetism of ordered Sm/Co(0001) surface structures. https://doi.org/10.1103/physrevb.72.092409

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