Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles

The magnetic properties of bimagnetic core/shell nanoparticles consisting of an antiferromagnetic MnO core and a ferrimagnetic passivation shell have been investigated. It is found that the phase of the passivation shell (γ-Mn2O3 or Mn3O4) depends on the size of the nanoparticles. Structural and mag...

Descripción completa

Detalles Bibliográficos
Autores: López-Ortega, Alberto, Tobia, Dina, Winkler, Elin, Golosovsky, Igor V., Salazar-Alvarez, German, Estradé Albiol, Sònia, Estrader i Bofarull, Marta, Sort, Jordi, González, Miguel, Suriñach, Santiago (Suriñach Cornet), Arbiol i Cobos, Jordi, Peiró Martínez, Francisca, Zysler, Roberto D., Baró, M. D., Nogués, Josep
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/176672
Acceso en línea:https://hdl.handle.net/2445/176672
Access Level:acceso abierto
Palabra clave:Nanopartícules
Propietats magnètiques
Nanoparticles
Magnetic properties
id ES_df112e6fa31872131b5045bfa590edea
oai_identifier_str oai:diposit.ub.edu:2445/176672
network_acronym_str ES
network_name_str España
repository_id_str
spelling Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticlesLópez-Ortega, AlbertoTobia, DinaWinkler, ElinGolosovsky, Igor V.Salazar-Alvarez, GermanEstradé Albiol, SòniaEstrader i Bofarull, MartaSort, JordiGonzález, MiguelSuriñach, Santiago (Suriñach Cornet)Arbiol i Cobos, JordiPeiró Martínez, FranciscaZysler, Roberto D.Baró, M. D.Nogués, JosepNanopartículesPropietats magnètiquesNanoparticlesMagnetic propertiesThe magnetic properties of bimagnetic core/shell nanoparticles consisting of an antiferromagnetic MnO core and a ferrimagnetic passivation shell have been investigated. It is found that the phase of the passivation shell (γ-Mn2O3 or Mn3O4) depends on the size of the nanoparticles. Structural and magnetic characterizations concur that while the smallest nanoparticles have a predominantly γ-Mn2O3 shell, larger ones have increasing amounts of Mn3O4. A considerable enhancement of the Néel temperature, TN, and the magnetic anisotropy of the MnO core for decreasing core sizes has been observed. The size reduction also leads to other phenomena such as persistent magnetic moment in MnO up to high temperatures and an unusual temperature behavior of the magnetic domains.American Chemical Society2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/176672Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1021/ja1021798Journal of the American Chemical Society, 2010, vol. 132, num. 27, p. 9398-9407https://doi.org/10.1021/ja1021798info:eu-repo/grantAgreement/EC/FP7/247518(c) American Chemical Society , 2010info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1766722026-05-27T06:46:51Z
dc.title.none.fl_str_mv Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
title Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
spellingShingle Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
López-Ortega, Alberto
Nanopartícules
Propietats magnètiques
Nanoparticles
Magnetic properties
title_short Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
title_full Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
title_fullStr Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
title_full_unstemmed Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
title_sort Size-Dependent passivation shell and magnetic properties in antiferromagnetic/ferrimagnetic core/shell MnO nanoparticles
dc.creator.none.fl_str_mv López-Ortega, Alberto
Tobia, Dina
Winkler, Elin
Golosovsky, Igor V.
Salazar-Alvarez, German
Estradé Albiol, Sònia
Estrader i Bofarull, Marta
Sort, Jordi
González, Miguel
Suriñach, Santiago (Suriñach Cornet)
Arbiol i Cobos, Jordi
Peiró Martínez, Francisca
Zysler, Roberto D.
Baró, M. D.
Nogués, Josep
author López-Ortega, Alberto
author_facet López-Ortega, Alberto
Tobia, Dina
Winkler, Elin
Golosovsky, Igor V.
Salazar-Alvarez, German
Estradé Albiol, Sònia
Estrader i Bofarull, Marta
Sort, Jordi
González, Miguel
Suriñach, Santiago (Suriñach Cornet)
Arbiol i Cobos, Jordi
Peiró Martínez, Francisca
Zysler, Roberto D.
Baró, M. D.
Nogués, Josep
author_role author
author2 Tobia, Dina
Winkler, Elin
Golosovsky, Igor V.
Salazar-Alvarez, German
Estradé Albiol, Sònia
Estrader i Bofarull, Marta
Sort, Jordi
González, Miguel
Suriñach, Santiago (Suriñach Cornet)
Arbiol i Cobos, Jordi
Peiró Martínez, Francisca
Zysler, Roberto D.
Baró, M. D.
Nogués, Josep
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Nanopartícules
Propietats magnètiques
Nanoparticles
Magnetic properties
topic Nanopartícules
Propietats magnètiques
Nanoparticles
Magnetic properties
description The magnetic properties of bimagnetic core/shell nanoparticles consisting of an antiferromagnetic MnO core and a ferrimagnetic passivation shell have been investigated. It is found that the phase of the passivation shell (γ-Mn2O3 or Mn3O4) depends on the size of the nanoparticles. Structural and magnetic characterizations concur that while the smallest nanoparticles have a predominantly γ-Mn2O3 shell, larger ones have increasing amounts of Mn3O4. A considerable enhancement of the Néel temperature, TN, and the magnetic anisotropy of the MnO core for decreasing core sizes has been observed. The size reduction also leads to other phenomena such as persistent magnetic moment in MnO up to high temperatures and an unusual temperature behavior of the magnetic domains.
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/176672
url https://hdl.handle.net/2445/176672
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1021/ja1021798
Journal of the American Chemical Society, 2010, vol. 132, num. 27, p. 9398-9407
https://doi.org/10.1021/ja1021798
info:eu-repo/grantAgreement/EC/FP7/247518
dc.rights.none.fl_str_mv (c) American Chemical Society , 2010
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Chemical Society , 2010
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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 Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422031269789696
score 15,300719

Similares en LA Referencia