Creep turns linear in narrow ferromagnetic nanostrips

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Leliaert, Jonathan Van de Wiele, Ben Vansteenkiste, Arne Laurson, Lasse Durin, Gianfranco Dupre, Luc Van Waeyenberge, Bartel 2017-05-11T08:40:13Z 2017-05-11T08:40:13Z 2016-02-04
dc.identifier.citation Leliaert , J , Van de Wiele , B , Vansteenkiste , A , Laurson , L , Durin , G , Dupre , L & Van Waeyenberge , B 2016 , ' Creep turns linear in narrow ferromagnetic nanostrips ' SCIENTIFIC REPORTS , vol 6 , 20472 . DOI: 10.1038/srep20472 en
dc.identifier.issn 2045-2322
dc.identifier.other PURE UUID: 95b54c9a-3fa4-44aa-b0ea-6e1c74c91302
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE FILEURL:
dc.description.abstract The motion of domain walls in magnetic materials is a typical example of a creep process, usually characterised by a stretched exponential velocity-force relation. By performing large-scale micromagnetic simulations, and analyzing an extended 1D model which takes the effects of finite temperatures and material defects into account, we show that this creep scaling law breaks down in sufficiently narrow ferromagnetic strips. Our analysis of current-driven transverse domain wall motion in disordered Permalloy nanostrips reveals instead a creep regime with a linear dependence of the domain wall velocity on the applied field or current density. This originates from the essentially point-like nature of domain walls moving in narrow, line-like disordered nanostrips. An analogous linear relation is found also by analyzing existing experimental data on field-driven domain wall motion in perpendicularly magnetised media. en
dc.format.extent 9
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries SCIENTIFIC REPORTS en
dc.relation.ispartofseries Volume 6 en
dc.rights openAccess en
dc.subject.other 114 Physical sciences en
dc.title Creep turns linear in narrow ferromagnetic nanostrips en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Ghent University
dc.contributor.department Department of Applied Physics
dc.contributor.department ISI Fdn
dc.subject.keyword DOMAIN-WALL DYNAMICS
dc.subject.keyword MOTION
dc.subject.keyword MEMORY
dc.subject.keyword UNIVERSALITY
dc.subject.keyword FLUCTUATIONS
dc.subject.keyword TEMPERATURE
dc.subject.keyword RACETRACK
dc.subject.keyword NANOWIRES
dc.subject.keyword STRIPS
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201705114091
dc.identifier.doi 10.1038/srep20472
dc.type.version publishedVersion

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