Creep turns linear in narrow ferromagnetic nanostrips

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorLeliaert, Jonathan
dc.contributor.authorVan de Wiele, Ben
dc.contributor.authorVansteenkiste, Arne
dc.contributor.authorLaurson, Lasse
dc.contributor.authorDurin, Gianfranco
dc.contributor.authorDupre, Luc
dc.contributor.authorVan Waeyenberge, Bartel
dc.contributor.departmentGhent University
dc.contributor.departmentDepartment of Applied Physics
dc.contributor.departmentISI Foundation
dc.date.accessioned2017-05-11T08:40:13Z
dc.date.available2017-05-11T08:40:13Z
dc.date.issued2016-02-04
dc.description.abstractThe 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.description.versionPeer revieweden
dc.format.extent9
dc.format.mimetypeapplication/pdf
dc.identifier.citationLeliaert , 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 . https://doi.org/10.1038/srep20472en
dc.identifier.doi10.1038/srep20472
dc.identifier.issn2045-2322
dc.identifier.otherPURE UUID: 95b54c9a-3fa4-44aa-b0ea-6e1c74c91302
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/95b54c9a-3fa4-44aa-b0ea-6e1c74c91302
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/11504179/srep20472.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/25707
dc.identifier.urnURN:NBN:fi:aalto-201705114091
dc.language.isoenen
dc.relation.ispartofseriesSCIENTIFIC REPORTSen
dc.relation.ispartofseriesVolume 6en
dc.rightsopenAccessen
dc.subject.keywordDOMAIN-WALL DYNAMICS
dc.subject.keywordPERPENDICULAR ANISOTROPY
dc.subject.keywordMOTION
dc.subject.keywordMEMORY
dc.subject.keywordUNIVERSALITY
dc.subject.keywordFLUCTUATIONS
dc.subject.keywordTEMPERATURE
dc.subject.keywordRACETRACK
dc.subject.keywordNANOWIRES
dc.subject.keywordSTRIPS
dc.titleCreep turns linear in narrow ferromagnetic nanostripsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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