Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles

Measurements of ac-susceptibility and dc-magnetization were carried out on samples of Ni1−xZnxFe2O4 nanoparticles (x = 0, 0.25, 0.5, 0.75) with average diameters D ≈ 7 nm. Values of the superparamagnetic blocking temperature TB were obtained from the characteristic temperature behavior of the imagin...

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Detalhes bibliográficos
Autor: JOSE TRINIDAD ELIZALDE GALINDO
Formato: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2007
País:México
Recursos:Centro de Investigación en Materiales Avanzados
Repositorio:Fuente de Objetos Científicos Open Access del CIMAV
Idioma:inglés
OAI Identifier:oai:cimav.repositorioinstitucional.mx:1004/1004
Acesso em linha:http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1004
Access Level:acceso abierto
Palavra-chave:info:eu-repo/classification/Zn-doping/Nickel
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/22
info:eu-repo/classification/cti/2299
info:eu-repo/classification/cti/229999
id MX_e5f8afa1b12745f3cfd2d22a40fa1ac3
oai_identifier_str oai:cimav.repositorioinstitucional.mx:1004/1004
network_acronym_str MX
network_name_str México
repository_id_str
spelling Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticlesJOSE TRINIDAD ELIZALDE GALINDOinfo:eu-repo/classification/Zn-doping/Nickelinfo:eu-repo/classification/cti/1info:eu-repo/classification/cti/22info:eu-repo/classification/cti/2299info:eu-repo/classification/cti/229999info:eu-repo/classification/cti/229999Measurements of ac-susceptibility and dc-magnetization were carried out on samples of Ni1−xZnxFe2O4 nanoparticles (x = 0, 0.25, 0.5, 0.75) with average diameters D ≈ 7 nm. Values of the superparamagnetic blocking temperature TB were obtained from the characteristic temperature behavior of the imaginary susceptibility χimag. An Arrhenius-type law, which accurately describes the relationship between the observation time τobs and the blocking temperature, was used to determine the effective energy barrier to magnetization reversal Ueff. A Zn-content dependence of the energy barrier is observed, where Ueff changes little for 0 ≤ x ≤ 0.25, it peaks at x = 0.5, and decreases back upon further Zn-doping. The large increase of Ueff at x = 0.5 is attributed to an enhanced magnetic anisotropy induced by the crossover between two spatial arrangements of spins in the A and B sub-lattices of the ferrimagnetic inverse spinel.LUIS EDMUNDO FUENTES COBASJOSE ANDRES MATUTES AQUINO2007-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionapplication/pdfhttp://cimav.repositorioinstitucional.mx/jspui/handle/1004/1004reponame:Fuente de Objetos Científicos Open Access del CIMAVinstname:Centro de Investigación en Materiales Avanzadosinstacron:CIMAVenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/about/cc0/oai:cimav.repositorioinstitucional.mx:1004/10042024-08-28T03:19:00Z
dc.title.none.fl_str_mv Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
title Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
spellingShingle Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
JOSE TRINIDAD ELIZALDE GALINDO
info:eu-repo/classification/Zn-doping/Nickel
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/22
info:eu-repo/classification/cti/2299
info:eu-repo/classification/cti/229999
info:eu-repo/classification/cti/229999
title_short Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
title_full Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
title_fullStr Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
title_full_unstemmed Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
title_sort Zn-doping effect on the energy barrier to magnetization reversal in superparamagnetic nickel ferrite nanoparticles
dc.creator.none.fl_str_mv JOSE TRINIDAD ELIZALDE GALINDO
author JOSE TRINIDAD ELIZALDE GALINDO
author_facet JOSE TRINIDAD ELIZALDE GALINDO
author_role author
dc.contributor.none.fl_str_mv LUIS EDMUNDO FUENTES COBAS
JOSE ANDRES MATUTES AQUINO
dc.subject.none.fl_str_mv info:eu-repo/classification/Zn-doping/Nickel
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/22
info:eu-repo/classification/cti/2299
info:eu-repo/classification/cti/229999
info:eu-repo/classification/cti/229999
topic info:eu-repo/classification/Zn-doping/Nickel
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/22
info:eu-repo/classification/cti/2299
info:eu-repo/classification/cti/229999
info:eu-repo/classification/cti/229999
description Measurements of ac-susceptibility and dc-magnetization were carried out on samples of Ni1−xZnxFe2O4 nanoparticles (x = 0, 0.25, 0.5, 0.75) with average diameters D ≈ 7 nm. Values of the superparamagnetic blocking temperature TB were obtained from the characteristic temperature behavior of the imaginary susceptibility χimag. An Arrhenius-type law, which accurately describes the relationship between the observation time τobs and the blocking temperature, was used to determine the effective energy barrier to magnetization reversal Ueff. A Zn-content dependence of the energy barrier is observed, where Ueff changes little for 0 ≤ x ≤ 0.25, it peaks at x = 0.5, and decreases back upon further Zn-doping. The large increase of Ueff at x = 0.5 is attributed to an enhanced magnetic anisotropy induced by the crossover between two spatial arrangements of spins in the A and B sub-lattices of the ferrimagnetic inverse spinel.
publishDate 2007
dc.date.none.fl_str_mv 2007-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1004
url http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1004
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/about/cc0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/about/cc0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Fuente de Objetos Científicos Open Access del CIMAV
instname:Centro de Investigación en Materiales Avanzados
instacron:CIMAV
instname_str Centro de Investigación en Materiales Avanzados
instacron_str CIMAV
institution CIMAV
reponame_str Fuente de Objetos Científicos Open Access del CIMAV
collection Fuente de Objetos Científicos Open Access del CIMAV
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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