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Ferromagnetic resonance in nanostructures with temperature-controlled interlayer interaction
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics. Inst Magnetism NAS & MES Ukraine.
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.
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2016 (English)In: Low temperature physics (Woodbury, N.Y., Print), ISSN 1063-777X, E-ISSN 1090-6517, Vol. 42, no 9, 761-767 p.Article in journal (Refereed) Published
Abstract [en]

This study is a comprehensive analysis of a multilayer F-1/f(d)/F-2pin structure's magnetic resonance properties, wherein F-1 and F-2pin are the free and exchange-coupled strong magnetic layers, and f is the weakly magnetic layer with a Curie point in the room temperature region. Depending on the magnetic state of the spacer f (ferromagnetic or paramagnetic) the exchange interaction between the F-2 and F-2pin layers becomes a function of the temperature, which opens up opportunities for practical applications. The obtained results show that the interlayer exchange coupling can be enhanced by decreasing the thickness of the spacer d, or by lowering the temperature. Strengthening the exchange coupling leads to a stronger manifestation of unidirectional anisotropy in the ferromagnetic resonance layer F-1, as well as to a broadening of the resonance line that is atypical for thin films. The observed features are analyzed in the context of comparing the effects of two different natures: the influence of the spacer d and the influence of the temperature. Thus, the behavior of changes to the unidirectional anisotropy remains the same given variation of both the thickness of the spacer and the temperature. However the broadening of the magnetic resonance line is more sensitive to changes in the interlayer interaction caused by variation of d, and is less susceptible to changes caused by temperature.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2016. Vol. 42, no 9, 761-767 p.
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Condensed Matter Physics
URN: urn:nbn:se:kth:diva-196439DOI: 10.1063/1.4964116ISI: 000385872700008ScopusID: 2-s2.0-84990996539OAI: diva2:1050558
Stiftelsen Olle Engkvist ByggmästareSwedish Research Council, VR 2014-4548

QC 20161129

Available from: 2016-11-29 Created: 2016-11-14 Last updated: 2016-11-29Bibliographically approved

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Polishchuk, DmytrKravets, AnatoliiKorenivski, Vladislav
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