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  Huge quadratic magneto-optical Kerr effect and magnetization reversal in the Co2FeSi Heusler compound

Hamrle, J., Blomeier, S., Gaier, O., Hillebrands, B., Schneider, H., Jakob, G., et al. (2007). Huge quadratic magneto-optical Kerr effect and magnetization reversal in the Co2FeSi Heusler compound. Journal of Physics D: Applied Physics, 40(6), 1563-1569. doi:10.1088/0022-3727/40/6/S09.

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Hamrle, J.1, Autor
Blomeier, S.1, Autor
Gaier, O.1, Autor
Hillebrands, B.1, Autor
Schneider, H.1, Autor
Jakob, G.1, Autor
Postava, K.1, Autor
Felser, C.2, Autor           
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Zusammenfassung: Co2FeSi(1 0 0) films with L21 structure deposited onto MgO(1 0 0) were studied using both the longitudinal and quadratic (QMOKE) magneto-optical Kerr effect. The films exhibit a huge QMOKE signal with a maximum contribution of up to 30 mdeg, which is the largest QMOKE signal in reflection that has been measured thus far. This large value is a fingerprint of an exceptionally large spin–orbit coupling of second or higher order. The Co2FeSi(1 0 0) films exhibit a rather large coercivity of 350 Oe and 70 Oe for film thicknesses of 22 nm and 98 nm, respectively. Despite the fact that the films are epitaxial, they do not provide an angular dependence of the anisotropy and the remanence in excess of 1% and 2%, respectively.

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 Datum: 2007-03-21
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Identifikatoren: ISI: 000245291700010
DOI: 10.1088/0022-3727/40/6/S09
 Art des Abschluß: -

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Titel: Journal of Physics D: Applied Physics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol, UK : IOP Publishing Ltd.
Seiten: - Band / Heft: 40 (6) Artikelnummer: - Start- / Endseite: 1563 - 1569 Identifikator: ISSN: 0022-3727
CoNE: https://pure.mpg.de/cone/journals/resource/0022-3727