Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles

Autores
Molina Concha, Belén; Zysler, Roberto Daniel; Romero, Héctor
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have studied the internal magnetic order of 3-nm (Fe0.69Co0.31)0.6B0.4 amorphous nanoparticles. These nanoparticles were dispersed in a non-magnetic matrix (non-interacting nanoparticles) to contrast them with the powder samples, where strong interparticle interactions are present. In similar fashion to the bulk alloy, this system exhibits a saturation magnetization maximum as a function of Fe composition near 69 at% Fe for the powder and dispersed samples at all temperatures. The saturation magnetization (MS) of the dispersed sample shows anomalous behavior, revealing frustration in the internal magnetic order of the particles. Unexpectedly, the MS of the non-interacting sample at low temperatures is larger than the corresponding bulk alloy or the calculated value of MS for the same Fe-Co composition. By contrast, the powder sample has low MS values and it is approximately constant in temperature.
Fil: Molina Concha, Belén. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Zysler, Roberto Daniel. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Romero, Héctor. Universidad de Los Andes; Venezuela
Materia
AMORPHOUS MAGNETIC MATERIALS
FE-CO-B ALLOYS
FINE-PARTICLE SYSTEMS
MAGNETIC ANISOTROPY
MAGNETIZATION ENHANCEMENT
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/195160
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticlesMolina Concha, BelénZysler, Roberto DanielRomero, HéctorAMORPHOUS MAGNETIC MATERIALSFE-CO-B ALLOYSFINE-PARTICLE SYSTEMSMAGNETIC ANISOTROPYMAGNETIZATION ENHANCEMENThttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have studied the internal magnetic order of 3-nm (Fe0.69Co0.31)0.6B0.4 amorphous nanoparticles. These nanoparticles were dispersed in a non-magnetic matrix (non-interacting nanoparticles) to contrast them with the powder samples, where strong interparticle interactions are present. In similar fashion to the bulk alloy, this system exhibits a saturation magnetization maximum as a function of Fe composition near 69 at% Fe for the powder and dispersed samples at all temperatures. The saturation magnetization (MS) of the dispersed sample shows anomalous behavior, revealing frustration in the internal magnetic order of the particles. Unexpectedly, the MS of the non-interacting sample at low temperatures is larger than the corresponding bulk alloy or the calculated value of MS for the same Fe-Co composition. By contrast, the powder sample has low MS values and it is approximately constant in temperature.Fil: Molina Concha, Belén. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); ArgentinaFil: Zysler, Roberto Daniel. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Romero, Héctor. Universidad de Los Andes; VenezuelaMDPI AG2012-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/195160Molina Concha, Belén; Zysler, Roberto Daniel; Romero, Héctor; Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles; MDPI AG; Applied Sciences; 2; 2; 4-2012; 315-3262076-3417CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2076-3417/2/2/315info:eu-repo/semantics/altIdentifier/doi/10.3390/app2020315info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:43:10Zoai:ri.conicet.gov.ar:11336/195160instacron: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:34982025-10-15 14:43:10.466CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
title Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
spellingShingle Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
Molina Concha, Belén
AMORPHOUS MAGNETIC MATERIALS
FE-CO-B ALLOYS
FINE-PARTICLE SYSTEMS
MAGNETIC ANISOTROPY
MAGNETIZATION ENHANCEMENT
title_short Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
title_full Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
title_fullStr Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
title_full_unstemmed Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
title_sort Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles
dc.creator.none.fl_str_mv Molina Concha, Belén
Zysler, Roberto Daniel
Romero, Héctor
author Molina Concha, Belén
author_facet Molina Concha, Belén
Zysler, Roberto Daniel
Romero, Héctor
author_role author
author2 Zysler, Roberto Daniel
Romero, Héctor
author2_role author
author
dc.subject.none.fl_str_mv AMORPHOUS MAGNETIC MATERIALS
FE-CO-B ALLOYS
FINE-PARTICLE SYSTEMS
MAGNETIC ANISOTROPY
MAGNETIZATION ENHANCEMENT
topic AMORPHOUS MAGNETIC MATERIALS
FE-CO-B ALLOYS
FINE-PARTICLE SYSTEMS
MAGNETIC ANISOTROPY
MAGNETIZATION ENHANCEMENT
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 have studied the internal magnetic order of 3-nm (Fe0.69Co0.31)0.6B0.4 amorphous nanoparticles. These nanoparticles were dispersed in a non-magnetic matrix (non-interacting nanoparticles) to contrast them with the powder samples, where strong interparticle interactions are present. In similar fashion to the bulk alloy, this system exhibits a saturation magnetization maximum as a function of Fe composition near 69 at% Fe for the powder and dispersed samples at all temperatures. The saturation magnetization (MS) of the dispersed sample shows anomalous behavior, revealing frustration in the internal magnetic order of the particles. Unexpectedly, the MS of the non-interacting sample at low temperatures is larger than the corresponding bulk alloy or the calculated value of MS for the same Fe-Co composition. By contrast, the powder sample has low MS values and it is approximately constant in temperature.
Fil: Molina Concha, Belén. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina
Fil: Zysler, Roberto Daniel. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Romero, Héctor. Universidad de Los Andes; Venezuela
description We have studied the internal magnetic order of 3-nm (Fe0.69Co0.31)0.6B0.4 amorphous nanoparticles. These nanoparticles were dispersed in a non-magnetic matrix (non-interacting nanoparticles) to contrast them with the powder samples, where strong interparticle interactions are present. In similar fashion to the bulk alloy, this system exhibits a saturation magnetization maximum as a function of Fe composition near 69 at% Fe for the powder and dispersed samples at all temperatures. The saturation magnetization (MS) of the dispersed sample shows anomalous behavior, revealing frustration in the internal magnetic order of the particles. Unexpectedly, the MS of the non-interacting sample at low temperatures is larger than the corresponding bulk alloy or the calculated value of MS for the same Fe-Co composition. By contrast, the powder sample has low MS values and it is approximately constant in temperature.
publishDate 2012
dc.date.none.fl_str_mv 2012-04
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/11336/195160
Molina Concha, Belén; Zysler, Roberto Daniel; Romero, Héctor; Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles; MDPI AG; Applied Sciences; 2; 2; 4-2012; 315-326
2076-3417
CONICET Digital
CONICET
url http://hdl.handle.net/11336/195160
identifier_str_mv Molina Concha, Belén; Zysler, Roberto Daniel; Romero, Héctor; Anomalous magnetization enhancement and frustration in the internal magnetic order on (Fe0.69Co0.31)B0.4 nanoparticles; MDPI AG; Applied Sciences; 2; 2; 4-2012; 315-326
2076-3417
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://www.mdpi.com/2076-3417/2/2/315
info:eu-repo/semantics/altIdentifier/doi/10.3390/app2020315
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
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 12.891075

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