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Bursty magnetic friction between polycrystalline thin films with domain walls

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Rissanen, Ilari
dc.contributor.author Laurson, Lasse
dc.date.accessioned 2019-11-07T12:10:18Z
dc.date.available 2019-11-07T12:10:18Z
dc.date.issued 2019-10-04
dc.identifier.citation Rissanen , I & Laurson , L 2019 , ' Bursty magnetic friction between polycrystalline thin films with domain walls ' , Physical Review B , vol. 100 , no. 14 , 144408 , pp. 1-9 . https://doi.org/10.1103/PhysRevB.100.144408 en
dc.identifier.issn 2469-9950
dc.identifier.issn 2469-9969
dc.identifier.other PURE UUID: fdb87320-749e-4a1c-b7f9-f71c2503473f
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/fdb87320-749e-4a1c-b7f9-f71c2503473f
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85073384530&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/38164102/PhysRevB.100.144408_1.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/41200
dc.description.abstract Two magnets in relative motion interact through their dipolar fields, making individual magnetic moments dynamically adapt to the changes in the energy landscape and bringing about collective magnetization dynamics. Some of the energy of the system is irrevocably lost through various coupling mechanisms between the spin degrees of freedom and those of the underlying lattice, resulting in magnetic friction. In this work, we use micromagnetic simulations to study magnetic friction in a system of two thin ferromagnetic films containing quenched disorder mimicking a polycrystalline structure. We observe bursts of magnetic activity resulting from repeated domain wall pinning due to the disorder and subsequent depinning triggered by the dipolar interaction between the moving films. These domain wall jumps result in strong energy dissipation peaks. We study how the properties of the polycrystalline structure such as grain size and strength of the disorder, along with the driving velocity and the width of the films, affect the magnetization dynamics, average energy dissipation, and the statistical properties of the energy dissipation bursts. en
dc.format.extent 1-9
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher American Physical Society
dc.relation.ispartofseries Physical Review B en
dc.relation.ispartofseries Volume 100, issue 14 en
dc.rights openAccess en
dc.title Bursty magnetic friction between polycrystalline thin films with domain walls en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Complex Systems and Materials
dc.contributor.department Tampere University
dc.contributor.department Department of Applied Physics en
dc.identifier.urn URN:NBN:fi:aalto-201911076205
dc.identifier.doi 10.1103/PhysRevB.100.144408
dc.type.version publishedVersion

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