Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/28776 https://doi.org/10.1103/PhysRevB.92.064422 |
Resumo: | We show that confinement in small volumes affects the interplay of exchange and dipolar interactions and the magnetic phases of hard and soft spherical core-shell nanoparticles. Large variations in the magnetization of thin shells may occur due to the core dipolar field gradient within the shell. The reversal field is tunable by the trends imposed by the dipolar and core-shell interface exchange energies. We show, for instance, that the reversal field of a CoFe2O4 (30 nm)@ MnFe 2O4 (6 nm) particle ranges from 15.5 kOe for antiferromagnetic coupling down to 2.5 kOe for ferromagnetic coupling. |
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Carriço, Artur da SilvaMedeiros Filho, F. C.Oliveira, L. L.Pedrosa, S. S.Rebouças, G. O. G.Dantas, Ana L.2020-04-08T22:12:07Z2020-04-08T22:12:07Z2015-08-26MEDEIROS FILHO, F. C.; OLIVEIRA, L. L.; PEDROSA, S. S.; REBOUCAS, G. G. O.; DANTAS, Ana L.; CARRIÇO, Artur da Silva. Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles. Physical Review. B, Condensed Matter and Materials Physics, v. 92, p. 0644221-0644227, 2015. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.064422. Acesso em: 08 abr. 2020.2469-9950 (print), 2469-9969 (online)https://repositorio.ufrn.br/jspui/handle/123456789/28776https://doi.org/10.1103/PhysRevB.92.064422American Physical SocietyCore-shellMagnetic phasesNanoparticlesImpact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticlesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe show that confinement in small volumes affects the interplay of exchange and dipolar interactions and the magnetic phases of hard and soft spherical core-shell nanoparticles. Large variations in the magnetization of thin shells may occur due to the core dipolar field gradient within the shell. The reversal field is tunable by the trends imposed by the dipolar and core-shell interface exchange energies. We show, for instance, that the reversal field of a CoFe2O4 (30 nm)@ MnFe 2O4 (6 nm) particle ranges from 15.5 kOe for antiferromagnetic coupling down to 2.5 kOe for ferromagnetic coupling.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessLICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28776/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52ORIGINALImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdfImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdfapplication/pdf1715497https://repositorio.ufrn.br/bitstream/123456789/28776/1/ImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf32799a32553dc5456cddcbf38c606744MD51TEXTImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf.txtImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf.txtExtracted texttext/plain33780https://repositorio.ufrn.br/bitstream/123456789/28776/3/ImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf.txtaeff961f3233dd85799db737d64608d8MD53THUMBNAILImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf.jpgImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf.jpgGenerated Thumbnailimage/jpeg1784https://repositorio.ufrn.br/bitstream/123456789/28776/4/ImpactOfCore-shellDipolarInteractionOnMagneticPhases_carrico_2015.pdf.jpge2231d77fd1b998f7429301f8bb7435eMD54123456789/287762020-05-05 01:29:28.424oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-05T04:29:28Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
title |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
spellingShingle |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles Carriço, Artur da Silva Core-shell Magnetic phases Nanoparticles |
title_short |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
title_full |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
title_fullStr |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
title_full_unstemmed |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
title_sort |
Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles |
author |
Carriço, Artur da Silva |
author_facet |
Carriço, Artur da Silva Medeiros Filho, F. C. Oliveira, L. L. Pedrosa, S. S. Rebouças, G. O. G. Dantas, Ana L. |
author_role |
author |
author2 |
Medeiros Filho, F. C. Oliveira, L. L. Pedrosa, S. S. Rebouças, G. O. G. Dantas, Ana L. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Carriço, Artur da Silva Medeiros Filho, F. C. Oliveira, L. L. Pedrosa, S. S. Rebouças, G. O. G. Dantas, Ana L. |
dc.subject.por.fl_str_mv |
Core-shell Magnetic phases Nanoparticles |
topic |
Core-shell Magnetic phases Nanoparticles |
description |
We show that confinement in small volumes affects the interplay of exchange and dipolar interactions and the magnetic phases of hard and soft spherical core-shell nanoparticles. Large variations in the magnetization of thin shells may occur due to the core dipolar field gradient within the shell. The reversal field is tunable by the trends imposed by the dipolar and core-shell interface exchange energies. We show, for instance, that the reversal field of a CoFe2O4 (30 nm)@ MnFe 2O4 (6 nm) particle ranges from 15.5 kOe for antiferromagnetic coupling down to 2.5 kOe for ferromagnetic coupling. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015-08-26 |
dc.date.accessioned.fl_str_mv |
2020-04-08T22:12:07Z |
dc.date.available.fl_str_mv |
2020-04-08T22:12:07Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MEDEIROS FILHO, F. C.; OLIVEIRA, L. L.; PEDROSA, S. S.; REBOUCAS, G. G. O.; DANTAS, Ana L.; CARRIÇO, Artur da Silva. Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles. Physical Review. B, Condensed Matter and Materials Physics, v. 92, p. 0644221-0644227, 2015. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.064422. Acesso em: 08 abr. 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/28776 |
dc.identifier.issn.none.fl_str_mv |
2469-9950 (print), 2469-9969 (online) |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1103/PhysRevB.92.064422 |
identifier_str_mv |
MEDEIROS FILHO, F. C.; OLIVEIRA, L. L.; PEDROSA, S. S.; REBOUCAS, G. G. O.; DANTAS, Ana L.; CARRIÇO, Artur da Silva. Impact of core-shell dipolar interaction on magnetic phases of spherical core-shell nanoparticles. Physical Review. B, Condensed Matter and Materials Physics, v. 92, p. 0644221-0644227, 2015. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.064422. Acesso em: 08 abr. 2020. 2469-9950 (print), 2469-9969 (online) |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/28776 https://doi.org/10.1103/PhysRevB.92.064422 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.none.fl_str_mv |
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Universidade Federal do Rio Grande do Norte (UFRN) |
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