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Laser-induced diffusion decomposition in Fe-V thin-film alloys

2015-05-01Journal article Restricted access
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dc.contributor.authorPolushkin, N. I.
dc.contributor.authorDuarte, A. C.
dc.contributor.authorConde, O.
dc.contributor.authorAlves, E.
dc.contributor.authorBarradas, N. P.
dc.contributor.authorGarcía-García, A.
dc.contributor.authorKakazei, G. N.
dc.contributor.authorVentura, J. O.
dc.contributor.authorAraújo, J. P.
dc.contributor.authorOliveira, Vitor
dc.contributor.authorVilar, R.
dc.date.accessioned2016-03-18T14:17:40Z
dc.date.available2016-03-18T14:17:40Z
dc.date.issued2015-05-01
dc.description.abstractWe investigate the origin of ferromagnetism induced in thin-film (similar to 20 nm) Fe-V alloys by their irradiation with subpicosecond laser pulses. We find with Rutherford backscattering that the magnetic modifications follow a thermally stimulated process of diffusion decomposition, with formation of a-few-nm-thick Fe enriched layer inside the film. Surprisingly, similar transformations in the samples were also found after their long-time (similar to 10(3) s) thermal annealing. However, the laser action provides much higher diffusion coefficients (similar to 4 orders of magnitude) than those obtained under standard heat treatments. We get a hint that this ultrafast diffusion decomposition occurs in the metallic glassy state achievable in laser-quenched samples. This vitrification is thought to be a prerequisite for the laser-induced onset of ferromagnetism that we observe. 2014 Elsevier B.V. All rights reserved.pt_PT
dc.identifier.citationPOLUSHKIN, N. I.; [et al.] - Laser-induced diffusion decomposition in Fe-V thin-film alloys. Applied Surface Science. ISSN. 0169-4332. Vol. 336 (2015), pp. 380-384pt_PT
dc.identifier.doi10.1016/j.apsusc.2014.12.164pt_PT
dc.identifier.issn0169-4332
dc.identifier.issn1873-5584
dc.identifier.urihttp://hdl.handle.net/10400.21/5911
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier Science BVpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0169433214028980pt_PT
dc.subjectMetallic alloyspt_PT
dc.subjectPhase separationpt_PT
dc.subjectLaser quenchingpt_PT
dc.subjectFerromagnetismpt_PT
dc.titleLaser-induced diffusion decomposition in Fe-V thin-film alloyspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage384pt_PT
oaire.citation.startPage380pt_PT
oaire.citation.volume336pt_PT
person.familyNameOliveira
person.givenNameVitor
person.identifier.ciencia-idDA1C-25BD-5974
person.identifier.orcid0000-0002-1757-4524
person.identifier.ridA-3058-2009
person.identifier.scopus-author-id7006105706
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication269ff9af-427f-4d1d-949c-cd77cd386e9f
relation.isAuthorOfPublication.latestForDiscovery269ff9af-427f-4d1d-949c-cd77cd386e9f

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