Barkhausen Noise from Precessional Domain Wall Motion

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Herranen, Touko Laurson, Lasse 2019-05-06T09:07:33Z 2019-05-06T09:07:33Z 2019-03-21
dc.identifier.citation Herranen , T & Laurson , L 2019 , ' Barkhausen Noise from Precessional Domain Wall Motion ' Physical Review Letters , vol. 122 , no. 11 , 117205 , pp. 1-5 . en
dc.identifier.issn 0031-9007
dc.identifier.issn 1079-7114
dc.identifier.other PURE UUID: 247d5d8e-043c-4142-bb42-80d8a10dc544
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description.abstract The jerky dynamics of domain walls driven by applied magnetic fields in disordered ferromagnets - the Barkhausen effect - is a paradigmatic example of crackling noise. We study Barkhausen noise in disordered Pt/Co/Pt thin films due to precessional motion of domain walls using full micromagnetic simulations, allowing for a detailed description of the domain wall internal structure. In this regime the domain walls contain topological defects known as Bloch lines which repeatedly nucleate, propagate, and annihilate within the domain wall during the Barkhausen jumps. In addition to bursts of domain wall propagation, the in-plane Bloch line dynamics within the domain wall exhibits crackling noise and constitutes the majority of the overall spin rotation activity. en
dc.format.extent 1-5
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher American Physical Society
dc.relation.ispartofseries Physical Review Letters en
dc.relation.ispartofseries Volume 122, issue 11 en
dc.rights openAccess en
dc.subject.other Physics and Astronomy(all) en
dc.subject.other 114 Physical sciences en
dc.title Barkhausen Noise from Precessional Domain Wall Motion en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Complex Systems and Materials
dc.contributor.department Department of Applied Physics en
dc.subject.keyword Physics and Astronomy(all)
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201905062741
dc.identifier.doi 10.1103/PhysRevLett.122.117205
dc.type.version publishedVersion

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