Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties

Autores
Lopes, Gleyguestone; Vargas, Jose Marcelo; Sharma, Surender K.; Béron, Fanny; Pirota, Kleber R.; Knobel, Marcelo; Rettori, Carlos; Zysler, Roberto Daniel
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper describes a solution-phase route to prepare Ag-Fe3O4 colloidal dimer nanoparticles (NPs) with a dumbbell-like shape. Results show enhancement of the magnetic anisotropy and large coercivity that are explained through the nonzero orbital moment, morb, and the related strong spin-orbit interaction that can be induced by a lattice distortion of the Fe-O bond lengths. In particular, distortions of the octahedral sites in magnetite result in Fe 3d-O 2p mixing and O 2p to Fe 3d charge transfer which, together with crystal field effects, lifts the electronic degeneracy, leading to a nonzero morb. dc magnetization and ferromagnetic resonance were employed for analyzing the magnetic response of the reference Fe3O4 NPs and Ag-Fe3O4 dimer NPs samples, showing a very good agreement with the structural characterization.
Fil: Lopes, Gleyguestone. Universidade Estadual de Campinas; Brasil
Fil: Vargas, Jose Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Sharma, Surender K.. Universidade Estadual de Campinas; Brasil
Fil: Béron, Fanny. Universidade Estadual de Campinas; Brasil
Fil: Pirota, Kleber R.. Universidade Estadual de Campinas; Brasil
Fil: Knobel, Marcelo. Universidade Estadual de Campinas; Brasil
Fil: Rettori, Carlos. Universidade Estadual de Campinas; Brasil
Fil: Zysler, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Materia
DIMER-NANOPARTICLES
MAGNETISM
MULTIFUNCTIONAL-NANOPARTICLES
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:11336/277613
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/277613
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic PropertiesLopes, GleyguestoneVargas, Jose MarceloSharma, Surender K.Béron, FannyPirota, Kleber R.Knobel, MarceloRettori, CarlosZysler, Roberto DanielDIMER-NANOPARTICLESMAGNETISMMULTIFUNCTIONAL-NANOPARTICLEShttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2This paper describes a solution-phase route to prepare Ag-Fe3O4 colloidal dimer nanoparticles (NPs) with a dumbbell-like shape. Results show enhancement of the magnetic anisotropy and large coercivity that are explained through the nonzero orbital moment, morb, and the related strong spin-orbit interaction that can be induced by a lattice distortion of the Fe-O bond lengths. In particular, distortions of the octahedral sites in magnetite result in Fe 3d-O 2p mixing and O 2p to Fe 3d charge transfer which, together with crystal field effects, lifts the electronic degeneracy, leading to a nonzero morb. dc magnetization and ferromagnetic resonance were employed for analyzing the magnetic response of the reference Fe3O4 NPs and Ag-Fe3O4 dimer NPs samples, showing a very good agreement with the structural characterization.Fil: Lopes, Gleyguestone. Universidade Estadual de Campinas; BrasilFil: Vargas, Jose Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Sharma, Surender K.. Universidade Estadual de Campinas; BrasilFil: Béron, Fanny. Universidade Estadual de Campinas; BrasilFil: Pirota, Kleber R.. Universidade Estadual de Campinas; BrasilFil: Knobel, Marcelo. Universidade Estadual de Campinas; BrasilFil: Rettori, Carlos. Universidade Estadual de Campinas; BrasilFil: Zysler, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaAmerican Chemical Society2010-04info: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/11336/277613Lopes, Gleyguestone; Vargas, Jose Marcelo; Sharma, Surender K.; Béron, Fanny; Pirota, Kleber R.; et al.; Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties; American Chemical Society; Journal of Physical Chemistry C; 114; 22; 4-2010; 10148-101521932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp102311uinfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp102311uinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T14:14:48Zoai:ri.conicet.gov.ar:11336/277613instacron: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:34982025-12-23 14:14:48.709CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
title Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
spellingShingle Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
Lopes, Gleyguestone
DIMER-NANOPARTICLES
MAGNETISM
MULTIFUNCTIONAL-NANOPARTICLES
title_short Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
title_full Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
title_fullStr Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
title_full_unstemmed Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
title_sort Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties
dc.creator.none.fl_str_mv Lopes, Gleyguestone
Vargas, Jose Marcelo
Sharma, Surender K.
Béron, Fanny
Pirota, Kleber R.
Knobel, Marcelo
Rettori, Carlos
Zysler, Roberto Daniel
author Lopes, Gleyguestone
author_facet Lopes, Gleyguestone
Vargas, Jose Marcelo
Sharma, Surender K.
Béron, Fanny
Pirota, Kleber R.
Knobel, Marcelo
Rettori, Carlos
Zysler, Roberto Daniel
author_role author
author2 Vargas, Jose Marcelo
Sharma, Surender K.
Béron, Fanny
Pirota, Kleber R.
Knobel, Marcelo
Rettori, Carlos
Zysler, Roberto Daniel
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv DIMER-NANOPARTICLES
MAGNETISM
MULTIFUNCTIONAL-NANOPARTICLES
topic DIMER-NANOPARTICLES
MAGNETISM
MULTIFUNCTIONAL-NANOPARTICLES
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This paper describes a solution-phase route to prepare Ag-Fe3O4 colloidal dimer nanoparticles (NPs) with a dumbbell-like shape. Results show enhancement of the magnetic anisotropy and large coercivity that are explained through the nonzero orbital moment, morb, and the related strong spin-orbit interaction that can be induced by a lattice distortion of the Fe-O bond lengths. In particular, distortions of the octahedral sites in magnetite result in Fe 3d-O 2p mixing and O 2p to Fe 3d charge transfer which, together with crystal field effects, lifts the electronic degeneracy, leading to a nonzero morb. dc magnetization and ferromagnetic resonance were employed for analyzing the magnetic response of the reference Fe3O4 NPs and Ag-Fe3O4 dimer NPs samples, showing a very good agreement with the structural characterization.
Fil: Lopes, Gleyguestone. Universidade Estadual de Campinas; Brasil
Fil: Vargas, Jose Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Sharma, Surender K.. Universidade Estadual de Campinas; Brasil
Fil: Béron, Fanny. Universidade Estadual de Campinas; Brasil
Fil: Pirota, Kleber R.. Universidade Estadual de Campinas; Brasil
Fil: Knobel, Marcelo. Universidade Estadual de Campinas; Brasil
Fil: Rettori, Carlos. Universidade Estadual de Campinas; Brasil
Fil: Zysler, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
description This paper describes a solution-phase route to prepare Ag-Fe3O4 colloidal dimer nanoparticles (NPs) with a dumbbell-like shape. Results show enhancement of the magnetic anisotropy and large coercivity that are explained through the nonzero orbital moment, morb, and the related strong spin-orbit interaction that can be induced by a lattice distortion of the Fe-O bond lengths. In particular, distortions of the octahedral sites in magnetite result in Fe 3d-O 2p mixing and O 2p to Fe 3d charge transfer which, together with crystal field effects, lifts the electronic degeneracy, leading to a nonzero morb. dc magnetization and ferromagnetic resonance were employed for analyzing the magnetic response of the reference Fe3O4 NPs and Ag-Fe3O4 dimer NPs samples, showing a very good agreement with the structural characterization.
publishDate 2010
dc.date.none.fl_str_mv 2010-04
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/11336/277613
Lopes, Gleyguestone; Vargas, Jose Marcelo; Sharma, Surender K.; Béron, Fanny; Pirota, Kleber R.; et al.; Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties; American Chemical Society; Journal of Physical Chemistry C; 114; 22; 4-2010; 10148-10152
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/277613
identifier_str_mv Lopes, Gleyguestone; Vargas, Jose Marcelo; Sharma, Surender K.; Béron, Fanny; Pirota, Kleber R.; et al.; Ag−Fe 3 O 4 Dimer Colloidal Nanoparticles: Synthesis and Enhancement of Magnetic Properties; American Chemical Society; Journal of Physical Chemistry C; 114; 22; 4-2010; 10148-10152
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp102311u
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp102311u
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 Chemical Society
publisher.none.fl_str_mv American Chemical 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
_version_ 1852335577950584832
score 12.952241

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