X-ray magneto-optics in lanthanides |
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Authors: | Starke K Heigl F Vollmer A Weiss M Reichardt G Kaindl G |
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Affiliation: | Institut für Experimentalphysik, Freie Universit?t Berlin, Arnimallee 14, D-14195 Berlin, Germany. |
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Abstract: | Magneto-optical methods in the visible light regime generally lack element specificity, which has become a considerable shortcoming in research on advanced heteromagnetic systems. Using circularly polarized soft x rays tuned to a 4d-4f core-level transition of a lanthanide element, the specularly reflected x-ray intensity changes proportionally to the magnetization of this element and, e.g., hystereses are easily measured element specifically. In contrast to the case of visible light, temperature dependent 4d-4f magneto-optical signals are not influenced by the thermal lattice expansion. |
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