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Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries

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dc.contributor.authorMarín Palacios, María Pilar
dc.contributor.authorAragón, A. M
dc.contributor.authorGarcia Escoria, A.
dc.contributor.authorLieblich, M.
dc.contributor.authorCrespo del Arco, Patricia
dc.contributor.authorHernando Grande, Antonio
dc.date.accessioned2023-06-19T15:08:07Z
dc.date.available2023-06-19T15:08:07Z
dc.date.issued2013-01-28
dc.description© 2013 American Institute of Physics. This work has been supported by the MEC of Spain: Consolider-Ingenio 2010 Contract Nos. CSD2007- 0010, MAT2009-14741-C02-01, and S2009 MAT
dc.description.abstractFe_(73.5)Si_(13.5)B_9Nb_3Cu_1 powder particles have been obtained by gas atomization. Magnetization curves and coercivity were studied for particles ranging in size up to 1000μ. The overall magnetic behavior of such material is consequence of compositional heterogeneity of the microstructure as a whole. Anomalous temperature variation of coercivity (H_c) (i.e., a decrease in H_c with decreasing temperature) together with a decrease of saturation magnetization has been observed for less than 25 μm size. The origin of this behavior has been ascribed to metastable FeCu and FeNbSi phases in combination with an Fe-rich one. Making magnetic powders with coercive fields of the order of mOe remains a challenge for researchers. Our experiment has allowed us, at low temperature, achieving a coercive field of 9 Oe, much lower than those observed so far in this type of materials. This behaviour has been related with a FeCu phase present on grain boundaries.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipComunidad de Madrid
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/41614
dc.identifier.doi10.1063/1.4788808
dc.identifier.issn0021-8979
dc.identifier.officialurlhttp://dx.doi.org/10.1063/1.4788808
dc.identifier.relatedurlhttp://aip.scitation.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/35406
dc.issue.number4
dc.journal.titleJournal of applied physics
dc.language.isoeng
dc.publisherAmerican Institute of Physics
dc.relation.projectIDMAT2009-14741-C02-01
dc.relation.projectIDNanobiomagnet (S2009/MAT-1726)
dc.relation.projectIDConsolider-Ingenio 2010, CSD2007-0010
dc.relation.projectIDTSI-020100-2011-280
dc.relation.projectIDIPT-2011-0893-42000
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordFe-Cu
dc.subject.keywordNanocrystalline Fe
dc.subject.keywordAlloys
dc.subject.keywordSoft
dc.subject.keywordAnisotropy
dc.subject.keywordMossbauer
dc.subject.keywordBehavior
dc.subject.keywordWires
dc.subject.keywordIron.
dc.subject.ucmFísica de materiales
dc.titleCoercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
dc.typejournal article
dc.volume.number113
dspace.entity.typePublication
relation.isAuthorOfPublication7fdc4e1c-351d-4061-9ee4-3369d55a3feb
relation.isAuthorOfPublication930014e1-7363-41d3-b971-b824e05f84b2
relation.isAuthorOfPublication.latestForDiscovery7fdc4e1c-351d-4061-9ee4-3369d55a3feb

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