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Enhanced magneto-optical Kerr effect in oxidized Co thin films

AuthorsArmelles Reig, Gaspar
Issue Date1998
PublisherAmerican Physical Society
CitationJournal of Applied Physics 83(11): 5621 (1998)
AbstractWe have studied the structural and magneto-optical properties of postdeposition oxidized Co thin films. The oxidization process leads to the formation of a double-layered structure of fcc Co3O4 on top of metallic Co. The magneto-optical Kerr effect (MOKE), measured in the range 0.8 eV ⩽ EPh ⩽ 5.5 eV reveals characteristic dependencies of the MOKE spectra on annealing temperature and time. In particular, we observe resonance-type enhancements of the Kerr effects by up to a factor of 10 compared with unannealed metallic Co. The experimental data are quantitatively reproduced by bilayer optical stack calculations.
Publisher version (URL)http://dx.doi.org/10.1063/1.367413
Appears in Collections:(IMN-CNM) Artículos
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