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Effect of nanostructure layout on spin pumping phenomena in antiferromagnet/nonmagnetic metal/ferromagnet multilayered stacks
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.ORCID iD: 0000-0001-5028-8928
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2017 (English)In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 7, no 5, article id 056312Article in journal (Refereed) Published
Abstract [en]

In this work we focus on magnetic relaxation in Mn80Ir20(12 nm)/Cu(6 nm)/Py(dF) antiferromagnet/Cu/ferromagnet (AFM/Cu/FM) multilayers with different thickness of the ferromagnetic permalloy layer. An effective FM-AFM interaction mediated via the conduction electrons in the nonmagnetic Cu spacer - the spin-pumping effect - is detected as an increase in the linewidth of the ferromagnetic resonance (FMR) spectra and a shift of the resonant magnetic field. We further find experimentally that the spin-pumping-induced contribution to the linewidth is inversely proportional to the thickness of the Py layer. We show that this thickness dependence likely originates from the dissipative dynamics of the free and localized spins in the AFM layer. The results obtained could be used for tailoring the dissipative properties of spintronic devices incorporating antiferromagnetic layers.

Place, publisher, year, edition, pages
American Institute of Physics Inc. , 2017. Vol. 7, no 5, article id 056312
Keywords [en]
Antiferromagnetic materials, Ferromagnetic materials, Ferromagnetic resonance, Ferromagnetism, Iridium, Magnetic multilayers, Manganese, Nickel alloys, Antiferromagnetic layers, Conduction electrons, Different thickness, Dissipative dynamics, Dissipative properties, Ferromagnetic resonance (FMR), Spin-pumping effects, Thickness dependence, Pumps
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-207349DOI: 10.1063/1.4975694ISI: 000402797100251Scopus ID: 2-s2.0-85011661357OAI: oai:DiVA.org:kth-207349DiVA, id: diva2:1097326
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QC 20170522

Available from: 2017-05-22 Created: 2017-05-22 Last updated: 2017-11-29Bibliographically approved

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Kravets, AnatoliiPolishchuk, DmytrKorenivski, Vladislav

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