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Study of magnetic anisotropy and magnetization reversal using the quadratic magnetooptical effect in epitaxial CoxMnyGez(111) films
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
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2009 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 21, no 29, 296005- p.Article in journal (Refereed) Published
Abstract [en]

Magnetic anisotropy, magnetization reversal and the magnetooptic Kerr effect in CoxMnyGez have been studied over a range of compositions between 0 and 50 at.% of Ge and between 1 and 3 in the Co to Mn atomic ratio, including the Heusler alloy Co2MnGe. A strong quadratic magnetooptic Kerr effect has been observed within a narrow region of composition centered around the Co to Mn atomic ratio of 2, which has been used to probe and quantify the magnetic anisotropy and magnetization reversal of the system. The anisotropy is sixfold with a weak uniaxial component, and it exhibits sensitive dependence on composition, especially on the atomic ratio between Co and Mn. The magnetization reversal process is consistent with the single-domain Stoner-Wohlfarth model.

Place, publisher, year, edition, pages
2009. Vol. 21, no 29, 296005- p.
Keyword [en]
X-RAY-DIFFRACTION, THIN-FILMS, HEUSLER ALLOY, FE FILMS, CO2MNGE, KERR, BEAM
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-32511DOI: 10.1088/0953-8984/21/29/296005ISI: 000267656400021Scopus ID: 2-s2.0-67651146727OAI: oai:DiVA.org:kth-32511DiVA: diva2:410962
Note
QC 20110415Available from: 2011-04-15 Created: 2011-04-15 Last updated: 2017-12-11Bibliographically approved

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