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Title: Magneto-optical spectroscopy of Co{sub 2}FeSi Heusler compound

Magneto-optical and electronic properties of the Co{sub 2}FeSi Heusler compound were studied by polar Kerr magneto-optical spectroscopy and ab-initio calculations. The thin-film samples were grown by dc/rf magnetron co-sputtering on MgO(100) substrates. A Cr seed layer was deposited prior to the Co{sub 2}FeSi layer to achieve its epitaxial growth. The magneto-optical spectroscopy was carried out using generalized magneto-optical ellipsometry with rotating analyzer in the photon energy range from 1.4 to 5.5 eV with an applied magnetic field of up to 1.2 T. The polar Kerr spectra showed a smooth spectral behavior up to 5.5 eV indicating nearly free charge carriers. Experimental data were compared with ab-initio calculations based on density functional theory employing the full-potential linearized augmented plane wave method.
Authors:
; ;  [1] ; ; ;  [2] ; ; ; ; ;  [3]
  1. Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 12116 Prague (Czech Republic)
  2. Nanotechnology Centre, VSB-Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava (Czech Republic)
  3. Faculty of Physics, Bielefeld University, Postfach 100131, 33501 Bielefeld (Germany)
Publication Date:
OSTI Identifier:
22273772
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; CHARGE CARRIERS; COBALT ALLOYS; COMPARATIVE EVALUATIONS; DENSITY FUNCTIONAL METHOD; ELLIPSOMETRY; EPITAXY; HEUSLER ALLOYS; IRON ALLOYS; LAYERS; MAGNESIUM OXIDES; MAGNETIC FIELDS; POTENTIALS; SILICON ALLOYS; SPUTTERING; SUBSTRATES; THIN FILMS; WAVE PROPAGATION