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

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4865463· OSTI ID:22273772

Beran, L.; Antos, R. ^[1]; Legut, D.; Hamrle, J.; Pistora, J. ^[2]; Sterwerf, Ch.; Meinert, M.; Schmalhorst, J. -M.; Kuschel, T.; Reiss, G. ^[3]

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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)

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.

• OSTI ID: 22273772
• Journal Information: Journal of Applied Physics, Vol. 115, 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); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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