Competing interparticle interactions and surface anisotropy in NiO nanoparticles

Autores
Meneses, C. T.; Duque, J. G. S.; de Biasi, Emilio; Nunes, W. C.; Sharma, S. K.; Knobel, M.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report unconventional magnetic properties on NiO nanoparticles of an average diameter of 5.8(7) nm obtained by coprecipitation method. To investigated the effect of the intra and interparticle interactions in the magnetic properties were dispersed in a polyvinyl-pyrrodone matrix at two different concentration. X-ray, ac, and dc magnetization and ferromagnetic resonance experiments were carried out on powder and dispersed NiO systems. Our results show that dispersed and concentrated samples exhibit following two different magnetic behaviors: (i) a high temperature peak related to the blocking of the particle core and (ii) a low temperature maximum likely related to the freezing of the frustrated spins on the surface particle. Besides, we have observed that the low temperature maximum is not field-dependent and dependent strongly on the distance among particles. This result can be understood taking account the decreasing of the dipolar interaction to more dispersed samples.
Fil: Meneses, C. T.. Universidade Federal de Sergipe; Brasil
Fil: Duque, J. G. S.. Universidade Federal de Sergipe; Brasil
Fil: de Biasi, Emilio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Nunes, W. C.. Universidade Federal Fluminense; Brasil
Fil: Sharma, S. K.. Universidade Estadual de Campinas; Brasil
Fil: Knobel, M.. Universidade Estadual de Campinas; Brasil
Materia
nanoparticles
surface
interations
frustration
spin_glass
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:11336/278663
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/278663
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Competing interparticle interactions and surface anisotropy in NiO nanoparticlesMeneses, C. T.Duque, J. G. S.de Biasi, EmilioNunes, W. C.Sharma, S. K.Knobel, M.nanoparticlessurfaceinterationsfrustrationspin_glasshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report unconventional magnetic properties on NiO nanoparticles of an average diameter of 5.8(7) nm obtained by coprecipitation method. To investigated the effect of the intra and interparticle interactions in the magnetic properties were dispersed in a polyvinyl-pyrrodone matrix at two different concentration. X-ray, ac, and dc magnetization and ferromagnetic resonance experiments were carried out on powder and dispersed NiO systems. Our results show that dispersed and concentrated samples exhibit following two different magnetic behaviors: (i) a high temperature peak related to the blocking of the particle core and (ii) a low temperature maximum likely related to the freezing of the frustrated spins on the surface particle. Besides, we have observed that the low temperature maximum is not field-dependent and dependent strongly on the distance among particles. This result can be understood taking account the decreasing of the dipolar interaction to more dispersed samples.Fil: Meneses, C. T.. Universidade Federal de Sergipe; BrasilFil: Duque, J. G. S.. Universidade Federal de Sergipe; BrasilFil: de Biasi, Emilio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Nunes, W. C.. Universidade Federal Fluminense; BrasilFil: Sharma, S. K.. Universidade Estadual de Campinas; BrasilFil: Knobel, M.. Universidade Estadual de Campinas; BrasilAmerican Institute of Physics2010-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278663Meneses, C. T.; Duque, J. G. S.; de Biasi, Emilio; Nunes, W. C.; Sharma, S. K.; et al.; Competing interparticle interactions and surface anisotropy in NiO nanoparticles; American Institute of Physics; Journal of Applied Physics; 108; 6-2010; 1-60021-8979CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1063/1.3459890info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-01-14T12:51:39Zoai:ri.conicet.gov.ar:11336/278663instacron: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:34982026-01-14 12:51:39.739CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Competing interparticle interactions and surface anisotropy in NiO nanoparticles
title Competing interparticle interactions and surface anisotropy in NiO nanoparticles
spellingShingle Competing interparticle interactions and surface anisotropy in NiO nanoparticles
Meneses, C. T.
nanoparticles
surface
interations
frustration
spin_glass
title_short Competing interparticle interactions and surface anisotropy in NiO nanoparticles
title_full Competing interparticle interactions and surface anisotropy in NiO nanoparticles
title_fullStr Competing interparticle interactions and surface anisotropy in NiO nanoparticles
title_full_unstemmed Competing interparticle interactions and surface anisotropy in NiO nanoparticles
title_sort Competing interparticle interactions and surface anisotropy in NiO nanoparticles
dc.creator.none.fl_str_mv Meneses, C. T.
Duque, J. G. S.
de Biasi, Emilio
Nunes, W. C.
Sharma, S. K.
Knobel, M.
author Meneses, C. T.
author_facet Meneses, C. T.
Duque, J. G. S.
de Biasi, Emilio
Nunes, W. C.
Sharma, S. K.
Knobel, M.
author_role author
author2 Duque, J. G. S.
de Biasi, Emilio
Nunes, W. C.
Sharma, S. K.
Knobel, M.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv nanoparticles
surface
interations
frustration
spin_glass
topic nanoparticles
surface
interations
frustration
spin_glass
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report unconventional magnetic properties on NiO nanoparticles of an average diameter of 5.8(7) nm obtained by coprecipitation method. To investigated the effect of the intra and interparticle interactions in the magnetic properties were dispersed in a polyvinyl-pyrrodone matrix at two different concentration. X-ray, ac, and dc magnetization and ferromagnetic resonance experiments were carried out on powder and dispersed NiO systems. Our results show that dispersed and concentrated samples exhibit following two different magnetic behaviors: (i) a high temperature peak related to the blocking of the particle core and (ii) a low temperature maximum likely related to the freezing of the frustrated spins on the surface particle. Besides, we have observed that the low temperature maximum is not field-dependent and dependent strongly on the distance among particles. This result can be understood taking account the decreasing of the dipolar interaction to more dispersed samples.
Fil: Meneses, C. T.. Universidade Federal de Sergipe; Brasil
Fil: Duque, J. G. S.. Universidade Federal de Sergipe; Brasil
Fil: de Biasi, Emilio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Nunes, W. C.. Universidade Federal Fluminense; Brasil
Fil: Sharma, S. K.. Universidade Estadual de Campinas; Brasil
Fil: Knobel, M.. Universidade Estadual de Campinas; Brasil
description We report unconventional magnetic properties on NiO nanoparticles of an average diameter of 5.8(7) nm obtained by coprecipitation method. To investigated the effect of the intra and interparticle interactions in the magnetic properties were dispersed in a polyvinyl-pyrrodone matrix at two different concentration. X-ray, ac, and dc magnetization and ferromagnetic resonance experiments were carried out on powder and dispersed NiO systems. Our results show that dispersed and concentrated samples exhibit following two different magnetic behaviors: (i) a high temperature peak related to the blocking of the particle core and (ii) a low temperature maximum likely related to the freezing of the frustrated spins on the surface particle. Besides, we have observed that the low temperature maximum is not field-dependent and dependent strongly on the distance among particles. This result can be understood taking account the decreasing of the dipolar interaction to more dispersed samples.
publishDate 2010
dc.date.none.fl_str_mv 2010-06
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/11336/278663
Meneses, C. T.; Duque, J. G. S.; de Biasi, Emilio; Nunes, W. C.; Sharma, S. K.; et al.; Competing interparticle interactions and surface anisotropy in NiO nanoparticles; American Institute of Physics; Journal of Applied Physics; 108; 6-2010; 1-6
0021-8979
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278663
identifier_str_mv Meneses, C. T.; Duque, J. G. S.; de Biasi, Emilio; Nunes, W. C.; Sharma, S. K.; et al.; Competing interparticle interactions and surface anisotropy in NiO nanoparticles; American Institute of Physics; Journal of Applied Physics; 108; 6-2010; 1-6
0021-8979
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1063/1.3459890
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
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
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 13.113929

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