Spin pumping at interfaces with ferro- and paramagnetic Fe60Al40films acting as spin source and spin sink

dc.bibliographicCitation.firstPage213906
dc.bibliographicCitation.issue21
dc.bibliographicCitation.journalTitleJournal of applied physics : AIP's archival journal for significant new results in applied physicseng
dc.bibliographicCitation.volume132
dc.contributor.authorStrusch, T.
dc.contributor.authorLenz, K.
dc.contributor.authorMeckenstock, R.
dc.contributor.authorBali, R.
dc.contributor.authorEhrler, J.
dc.contributor.authorLindner, J.
dc.contributor.authorFassbender, J.
dc.contributor.authorFarle, M.
dc.contributor.authorPotzger, K.
dc.contributor.authorSemisalova, A.
dc.date.accessioned2023-01-30T06:09:53Z
dc.date.available2023-01-30T06:09:53Z
dc.date.issued2022
dc.description.abstractWe present a study of spin pumping efficiency and determine the spin mixing conductance and spin diffusion length in thin bilayer films based on 3d transition metal alloy Fe60Al40. Due to its magnetostructural phase transition, Fe60Al40 can be utilized as a ferromagnetic (FM) or paramagnetic (PM) material at the same temperature depending on its structural order; thus a thin Fe60Al40 film can act as a spin source or a spin sink when interfaced with a paramagnet or a ferromagnet, respectively. Ferromagnetic resonance measurements were performed in a frequency range of 5-35 GHz on bilayer films composed of FM-Fe60Al40/Pd and PM-Fe60Al40/Ni80Fe20 (permalloy). The increase in damping with the thickness of the paramagnetic layer was interpreted as a result of spin pumping into the paramagnet. We determine the spin mixing conductance g P d ↑↓ = (3.8 ± 0.5) × 10 18 m - 2 at the FM-Fe60Al40/Pd interface and the spin diffusion length λ P d = 9.1 ± 2.0 nm in Pd. For the PM-Fe60Al40/permalloy interface, we find a spin mixing conductance g F e A l ↑↓ = (2.1 ± 0.2) × 10 18 m - 2 and a spin diffusion length λ F e A l = 11.9 ± 0.2 nm for PM-Fe60Al40. The demonstrated bi-functionality of the Fe60Al40 alloy in spin pumping structures may be promising for spintronic applications.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/11153
dc.identifier.urihttp://dx.doi.org/10.34657/10179
dc.language.isoeng
dc.publisherMelville, NY : American Inst. of Physics
dc.relation.doihttps://doi.org/10.1063/5.0125699
dc.relation.essn1089-7550
dc.relation.issn0021-8979
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.subject.ddc530
dc.subject.otherAluminum alloyseng
dc.subject.otherBinary alloyseng
dc.subject.otherDiffusioneng
dc.subject.otherFerromagnetic materialseng
dc.subject.otherFerromagnetic resonanceeng
dc.subject.otherFerromagnetismeng
dc.subject.otherFrequency modulationeng
dc.subject.otherMixingeng
dc.subject.otherNickel alloyseng
dc.subject.otherParamagnetismeng
dc.subject.otherSpin waveseng
dc.subject.otherTransition metalseng
dc.titleSpin pumping at interfaces with ferro- and paramagnetic Fe60Al40films acting as spin source and spin sinkeng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccess
wgl.contributorIFWD
wgl.subjectPhysikger
wgl.typeZeitschriftenartikelger
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