Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles

Autores
Lavorato, Gabriel Carlos; Lima, Enio Junior; Troiani, Horacio Esteban; Zysler, Roberto Daniel; Winkler, Elin Lilian
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this study we demonstrate that the effective coupling of the magnetic phases in core/shell nanoparticles can be promoted by an appropriate thermal annealing. In this way, the magnetization thermal stability of the hard ferrimagnetic CoFe2O4 oxide can be increased up to room temperature when coupled to a CoO antiferromagnetic core in an inverse core/shell structure. In addition, the results show that, being encapsulated in a ∼2 nm thick CoFe2O4 shell, the CoO core is successfully protected against oxidation which is crucial for the effectiveness of the magnetic coupling at the interface.
Fil: Lavorato, Gabriel Carlos. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lima, Enio Junior. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zysler, Roberto Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Winkler, Elin Lilian. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
CHEMICAL SYNTHESIS
CORE-SHELL NANOPARTICLES
MAGNETIC MEASUREMENTS
MAGNETIZATION
NANOSTRUCTURED MATERIALS
TEM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/38153
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/38153
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticlesLavorato, Gabriel CarlosLima, Enio JuniorTroiani, Horacio EstebanZysler, Roberto DanielWinkler, Elin LilianCHEMICAL SYNTHESISCORE-SHELL NANOPARTICLESMAGNETIC MEASUREMENTSMAGNETIZATIONNANOSTRUCTURED MATERIALSTEMhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2In this study we demonstrate that the effective coupling of the magnetic phases in core/shell nanoparticles can be promoted by an appropriate thermal annealing. In this way, the magnetization thermal stability of the hard ferrimagnetic CoFe2O4 oxide can be increased up to room temperature when coupled to a CoO antiferromagnetic core in an inverse core/shell structure. In addition, the results show that, being encapsulated in a ∼2 nm thick CoFe2O4 shell, the CoO core is successfully protected against oxidation which is crucial for the effectiveness of the magnetic coupling at the interface.Fil: Lavorato, Gabriel Carlos. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lima, Enio Junior. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zysler, Roberto Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Winkler, Elin Lilian. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science Sa2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/38153Lavorato, Gabriel Carlos; Lima, Enio Junior; Troiani, Horacio Esteban; Zysler, Roberto Daniel; Winkler, Elin Lilian; Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles; Elsevier Science Sa; Journal of Alloys and Compounds; 633; 6-2015; 333-3370925-8388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2015.02.050info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838815004764info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:55:49Zoai:ri.conicet.gov.ar:11336/38153instacron: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:34982025-09-03 09:55:49.457CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
title Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
spellingShingle Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
Lavorato, Gabriel Carlos
CHEMICAL SYNTHESIS
CORE-SHELL NANOPARTICLES
MAGNETIC MEASUREMENTS
MAGNETIZATION
NANOSTRUCTURED MATERIALS
TEM
title_short Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
title_full Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
title_fullStr Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
title_full_unstemmed Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
title_sort Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles
dc.creator.none.fl_str_mv Lavorato, Gabriel Carlos
Lima, Enio Junior
Troiani, Horacio Esteban
Zysler, Roberto Daniel
Winkler, Elin Lilian
author Lavorato, Gabriel Carlos
author_facet Lavorato, Gabriel Carlos
Lima, Enio Junior
Troiani, Horacio Esteban
Zysler, Roberto Daniel
Winkler, Elin Lilian
author_role author
author2 Lima, Enio Junior
Troiani, Horacio Esteban
Zysler, Roberto Daniel
Winkler, Elin Lilian
author2_role author
author
author
author
dc.subject.none.fl_str_mv CHEMICAL SYNTHESIS
CORE-SHELL NANOPARTICLES
MAGNETIC MEASUREMENTS
MAGNETIZATION
NANOSTRUCTURED MATERIALS
TEM
topic CHEMICAL SYNTHESIS
CORE-SHELL NANOPARTICLES
MAGNETIC MEASUREMENTS
MAGNETIZATION
NANOSTRUCTURED MATERIALS
TEM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this study we demonstrate that the effective coupling of the magnetic phases in core/shell nanoparticles can be promoted by an appropriate thermal annealing. In this way, the magnetization thermal stability of the hard ferrimagnetic CoFe2O4 oxide can be increased up to room temperature when coupled to a CoO antiferromagnetic core in an inverse core/shell structure. In addition, the results show that, being encapsulated in a ∼2 nm thick CoFe2O4 shell, the CoO core is successfully protected against oxidation which is crucial for the effectiveness of the magnetic coupling at the interface.
Fil: Lavorato, Gabriel Carlos. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lima, Enio Junior. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zysler, Roberto Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Winkler, Elin Lilian. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description In this study we demonstrate that the effective coupling of the magnetic phases in core/shell nanoparticles can be promoted by an appropriate thermal annealing. In this way, the magnetization thermal stability of the hard ferrimagnetic CoFe2O4 oxide can be increased up to room temperature when coupled to a CoO antiferromagnetic core in an inverse core/shell structure. In addition, the results show that, being encapsulated in a ∼2 nm thick CoFe2O4 shell, the CoO core is successfully protected against oxidation which is crucial for the effectiveness of the magnetic coupling at the interface.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
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/11336/38153
Lavorato, Gabriel Carlos; Lima, Enio Junior; Troiani, Horacio Esteban; Zysler, Roberto Daniel; Winkler, Elin Lilian; Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles; Elsevier Science Sa; Journal of Alloys and Compounds; 633; 6-2015; 333-337
0925-8388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/38153
identifier_str_mv Lavorato, Gabriel Carlos; Lima, Enio Junior; Troiani, Horacio Esteban; Zysler, Roberto Daniel; Winkler, Elin Lilian; Exchange-coupling in thermal annealed bimagnetic core/shell nanoparticles; Elsevier Science Sa; Journal of Alloys and Compounds; 633; 6-2015; 333-337
0925-8388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2015.02.050
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838815004764
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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 13.13397

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