Enhanced magneto-optical Kerr effect in spontaneously ordered FePt alloys: Quantitative agreement between theory and experiment
- 1 August 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (5), 3419-3422
- https://doi.org/10.1103/physrevb.50.3419
Abstract
A chemical-ordering-induced peak in the polar magneto-optical Kerr effect spectra of FePt compounds is found to be in quantitative agreement with predictions based on ab initio magneto-optical calculations. Experimental spectra of epitaxial molecular-beam-epitaxy grown FePt(001) films reveal a more than twofold enhancement of the Kerr rotation if full chemical ordering is present. A spectral feature at 2-eV photon energy shows a peak Kerr rotation of up to ∼0.8°, which is strongly correlated with the presence of perpendicular magnetic anisotropy in ordered compound films.Keywords
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