Ion beam induced modification of exchange interaction and spin–orbit coupling in the Co2FeSi Heusler compound

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dc.contributor.authorHamrle, Jaroslav
dc.contributor.authorBlomeier, S.
dc.contributor.authorHillebrands, B.
dc.contributor.authorSchneider, H.
dc.contributor.authorJakob, Gerhard
dc.contributor.authorReuscher, B.
dc.contributor.authorBrodyanski, A.
dc.contributor.authorKopnarski, M.
dc.contributor.authorPostava, Kamil
dc.contributor.authorFelser, C.
dc.date.accessioned2007-05-07T13:25:41Z
dc.date.available2007-05-07T13:25:41Z
dc.date.issued2007
dc.description.abstract-enA Co2FeSi (CFS) film with L21 structure was irradiated with different fluences of 30 keV Ga+ ions. Structural modifications were subsequently studied using the longitudinal (LMOKE) and quadratic (QMOKE) magneto-optical Kerr effect. Both the coercivity and the LMOKE amplitude were found to show a similar behaviour upon irradiation: they are nearly constant up to ion fluences of ≈6 × 1015 ion cm−2, while they decrease with further increasing fluences and finally vanish at a fluence of ≈9 × 1016 ion cm−2, when the sample becomes paramagnetic. However, contrary to this behaviour, the QMOKE signal nearly vanishes even for the smallest applied fluence of 3 × 1014 ion cm−2. We attribute this reduction of the QMOKE signal to an irradiation-induced degeneration of second or higher order spin–orbit coupling, which already happens at small fluences of 30 keV Ga+ ions. On the other hand, the reduction of coercivity and LMOKE signal with high ion fluences is probably caused by a reduction of the exchange interaction within the film material.en
dc.identifier.citationJournal of Physics D: Applied Physics. 2007, vol. 40, no. 6, p. 1558-1562.en
dc.identifier.doi10.1088/0022-3727/40/6/S08
dc.identifier.issn0022-3727
dc.identifier.issn1361-6463
dc.identifier.locationNení ve fondu ÚKen
dc.identifier.urihttp://hdl.handle.net/10084/60003
dc.identifier.wos000245291700009
dc.language.isoenen
dc.publisherInstitute of Physics Publishingen
dc.relation.ispartofseriesJournal of Physics D: Applied Physicsen
dc.relation.urihttp://dx.doi.org/10.1088/0022-3727/40/6/S08en
dc.relation.urihttp://arxiv.org/abs/cond-mat/0609633
dc.titleIon beam induced modification of exchange interaction and spin–orbit coupling in the Co2FeSi Heusler compounden
dc.typearticleen

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