Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers

Autores
Lavorato, Gabriel Carlos; Winkler, Elin Lilian; Rivas Murias, B.; Rivadulla, F.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Epitaxial magnetic heterostructures of (soft-)Fe3O4/(hard-)CoFe2O4(001) have been fabricated with a varying thicknesses of soft ferrite from 5 to 25 nm. We report a change in the regime of magnetic interaction between the layers from rigid-coupling to exchange-spring behavior, above a critical thickness of the soft magnetic Fe3O4 layer. We show that the symmetry and epitaxial matching between the spinel structures of CoFe2O4 and Fe3O4 at the interface stabilize the Verwey transition close to the bulk value even for 5-nm-thick Fe3O4. The large interface exchange-coupling constant estimated from low-temperature M(H) data confirmed the good quality of the ferrite-ferrite interface and the major role played by the interface in the magnetization dynamics. The results presented here constitute a model system for understanding the magnetic behavior of interfaces in core/shell nanoparticles and magnetic oxide-based spintronic devices.
Fil: Lavorato, Gabriel Carlos. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina
Fil: Winkler, Elin Lilian. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina
Fil: Rivas Murias, B.. Universidad de Santiago de Compostela. Facultad de Química; España
Fil: Rivadulla, F.. Universidad de Santiago de Compostela. Facultad de Química; España
Materia
THIN FILMS
EXCHANGE-COUPLING
CoFe2O4
Fe3O4
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/125813
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayersLavorato, Gabriel CarlosWinkler, Elin LilianRivas Murias, B.Rivadulla, F.THIN FILMSEXCHANGE-COUPLINGCoFe2O4Fe3O4https://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Epitaxial magnetic heterostructures of (soft-)Fe3O4/(hard-)CoFe2O4(001) have been fabricated with a varying thicknesses of soft ferrite from 5 to 25 nm. We report a change in the regime of magnetic interaction between the layers from rigid-coupling to exchange-spring behavior, above a critical thickness of the soft magnetic Fe3O4 layer. We show that the symmetry and epitaxial matching between the spinel structures of CoFe2O4 and Fe3O4 at the interface stabilize the Verwey transition close to the bulk value even for 5-nm-thick Fe3O4. The large interface exchange-coupling constant estimated from low-temperature M(H) data confirmed the good quality of the ferrite-ferrite interface and the major role played by the interface in the magnetization dynamics. The results presented here constitute a model system for understanding the magnetic behavior of interfaces in core/shell nanoparticles and magnetic oxide-based spintronic devices.Fil: Lavorato, Gabriel Carlos. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; ArgentinaFil: Winkler, Elin Lilian. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; ArgentinaFil: Rivas Murias, B.. Universidad de Santiago de Compostela. Facultad de Química; EspañaFil: Rivadulla, F.. Universidad de Santiago de Compostela. Facultad de Química; EspañaAmerican Physical Society2016-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/125813Lavorato, Gabriel Carlos; Winkler, Elin Lilian; Rivas Murias, B.; Rivadulla, F.; Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers; American Physical Society; Physical Review B; 94; 5; 8-2016; 544051-5440561098-01212469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.054405info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.94.054405info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:16Zoai:ri.conicet.gov.ar:11336/125813instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:21:16.444CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
title Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
spellingShingle Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
Lavorato, Gabriel Carlos
THIN FILMS
EXCHANGE-COUPLING
CoFe2O4
Fe3O4
title_short Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
title_full Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
title_fullStr Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
title_full_unstemmed Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
title_sort Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers
dc.creator.none.fl_str_mv Lavorato, Gabriel Carlos
Winkler, Elin Lilian
Rivas Murias, B.
Rivadulla, F.
author Lavorato, Gabriel Carlos
author_facet Lavorato, Gabriel Carlos
Winkler, Elin Lilian
Rivas Murias, B.
Rivadulla, F.
author_role author
author2 Winkler, Elin Lilian
Rivas Murias, B.
Rivadulla, F.
author2_role author
author
author
dc.subject.none.fl_str_mv THIN FILMS
EXCHANGE-COUPLING
CoFe2O4
Fe3O4
topic THIN FILMS
EXCHANGE-COUPLING
CoFe2O4
Fe3O4
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Epitaxial magnetic heterostructures of (soft-)Fe3O4/(hard-)CoFe2O4(001) have been fabricated with a varying thicknesses of soft ferrite from 5 to 25 nm. We report a change in the regime of magnetic interaction between the layers from rigid-coupling to exchange-spring behavior, above a critical thickness of the soft magnetic Fe3O4 layer. We show that the symmetry and epitaxial matching between the spinel structures of CoFe2O4 and Fe3O4 at the interface stabilize the Verwey transition close to the bulk value even for 5-nm-thick Fe3O4. The large interface exchange-coupling constant estimated from low-temperature M(H) data confirmed the good quality of the ferrite-ferrite interface and the major role played by the interface in the magnetization dynamics. The results presented here constitute a model system for understanding the magnetic behavior of interfaces in core/shell nanoparticles and magnetic oxide-based spintronic devices.
Fil: Lavorato, Gabriel Carlos. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina
Fil: Winkler, Elin Lilian. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina
Fil: Rivas Murias, B.. Universidad de Santiago de Compostela. Facultad de Química; España
Fil: Rivadulla, F.. Universidad de Santiago de Compostela. Facultad de Química; España
description Epitaxial magnetic heterostructures of (soft-)Fe3O4/(hard-)CoFe2O4(001) have been fabricated with a varying thicknesses of soft ferrite from 5 to 25 nm. We report a change in the regime of magnetic interaction between the layers from rigid-coupling to exchange-spring behavior, above a critical thickness of the soft magnetic Fe3O4 layer. We show that the symmetry and epitaxial matching between the spinel structures of CoFe2O4 and Fe3O4 at the interface stabilize the Verwey transition close to the bulk value even for 5-nm-thick Fe3O4. The large interface exchange-coupling constant estimated from low-temperature M(H) data confirmed the good quality of the ferrite-ferrite interface and the major role played by the interface in the magnetization dynamics. The results presented here constitute a model system for understanding the magnetic behavior of interfaces in core/shell nanoparticles and magnetic oxide-based spintronic devices.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/125813
Lavorato, Gabriel Carlos; Winkler, Elin Lilian; Rivas Murias, B.; Rivadulla, F.; Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers; American Physical Society; Physical Review B; 94; 5; 8-2016; 544051-544056
1098-0121
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/125813
identifier_str_mv Lavorato, Gabriel Carlos; Winkler, Elin Lilian; Rivas Murias, B.; Rivadulla, F.; Thickness dependence of exchange coupling in epitaxial Fe 3 O 4/ CoFe 2 O 4 soft/hard magnetic bilayers; American Physical Society; Physical Review B; 94; 5; 8-2016; 544051-544056
1098-0121
2469-9969
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.054405
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.94.054405
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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