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

Fe_(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 wh...

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Detalhes bibliográficos
Autores: Marín Palacios, María Pilar, Aragón, A. M, Garcia Escoria, A., Lieblich, M., Crespo del Arco, Patricia, Hernando Grande, Antonio
Formato: artículo
Fecha de publicación:2013
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/35406
Acesso em linha:https://hdl.handle.net/20.500.14352/35406
Access Level:acceso abierto
Palavra-chave:538.9
Fe-Cu
Nanocrystalline Fe
Alloys
Soft
Anisotropy
Mossbauer
Behavior
Wires
Iron.
Física de materiales
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oai_identifier_str oai:docta.ucm.es:20.500.14352/35406
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repository_id_str
spelling Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundariesMarín Palacios, María PilarAragón, A. MGarcia Escoria, A.Lieblich, M.Crespo del Arco, PatriciaHernando Grande, Antonio538.9Fe-CuNanocrystalline FeAlloysSoftAnisotropyMossbauerBehaviorWiresIron.Física de materialesFe_(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.American Institute of PhysicsUniversidad Complutense de Madrid20132013-01-2820132013-01-28journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/35406reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/354062026-06-02T12:44:21Z
dc.title.none.fl_str_mv Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
title Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
spellingShingle Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
Marín Palacios, María Pilar
538.9
Fe-Cu
Nanocrystalline Fe
Alloys
Soft
Anisotropy
Mossbauer
Behavior
Wires
Iron.
Física de materiales
title_short Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
title_full Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
title_fullStr Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
title_full_unstemmed Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
title_sort Coercivity and its thermal dependence in microsized magnetic particles: Influence of grain boundaries
dc.creator.none.fl_str_mv Marín Palacios, María Pilar
Aragón, A. M
Garcia Escoria, A.
Lieblich, M.
Crespo del Arco, Patricia
Hernando Grande, Antonio
author Marín Palacios, María Pilar
author_facet Marín Palacios, María Pilar
Aragón, A. M
Garcia Escoria, A.
Lieblich, M.
Crespo del Arco, Patricia
Hernando Grande, Antonio
author_role author
author2 Aragón, A. M
Garcia Escoria, A.
Lieblich, M.
Crespo del Arco, Patricia
Hernando Grande, Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Fe-Cu
Nanocrystalline Fe
Alloys
Soft
Anisotropy
Mossbauer
Behavior
Wires
Iron.
Física de materiales
topic 538.9
Fe-Cu
Nanocrystalline Fe
Alloys
Soft
Anisotropy
Mossbauer
Behavior
Wires
Iron.
Física de materiales
description Fe_(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.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-28
2013
2013-01-28
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/35406
url https://hdl.handle.net/20.500.14352/35406
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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