Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles

Autores
Tancredi, Pablo; Rivas Rojas, Patricia Carolina; Moscoso Londoño, Oscar; Muraca, Diego; Knobel, Marcelo; Socolovsky, Leandro Martín
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The present work describes a synthesis and characterization strategy employed to study the magnetic anisotropic properties of a diluted nanoparticulate system. The system under analysis is composed of monodisperse and highly crystalline 16 nm Co0.5Fe2.5O4 nanoparticles (NPs), homogenously dispersed in 1-octadecene. Owing to the liquid nature of the matrix at room temperature, the relative orientation of the nanoparticle easy axis can be controlled by an external magnetic field, enabling us to measure how the magnetic properties are modified by the alignment of the particles within the sample. In turn, by employing this strategy, we have found a significant hardness and squareness enhancement of the hysteresis loop in the magnetically oriented system, with the coercive field reaching a value as high as 30.2 kOe at low temperatures. In addition, the magnetic behavior associated with the system under study was supported by additional magnetic measurements, which were ascribed to different events expected to take place throughout the sample characterization, such as the melting process of the 1-octadecene matrix or the NP relaxation under the Brownian mechanism at high temperatures.
Fil: Tancredi, Pablo. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Fil: Rivas Rojas, Patricia Carolina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Moscoso Londoño, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Muraca, Diego. Universidade Estadual de Campinas; Brasil
Fil: Knobel, Marcelo. Universidade Estadual de Campinas; Brasil
Fil: Socolovsky, Leandro Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Nacional de la Patagonia Austral. Centro de Investigaciones y Transferencia de Santa Cruz; Argentina
Materia
magnetic nanoparticles
magnetic coercivity
cobalt ferrite
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:11336/175137
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticlesTancredi, PabloRivas Rojas, Patricia CarolinaMoscoso Londoño, OscarMuraca, DiegoKnobel, MarceloSocolovsky, Leandro Martínmagnetic nanoparticlesmagnetic coercivitycobalt ferritehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The present work describes a synthesis and characterization strategy employed to study the magnetic anisotropic properties of a diluted nanoparticulate system. The system under analysis is composed of monodisperse and highly crystalline 16 nm Co0.5Fe2.5O4 nanoparticles (NPs), homogenously dispersed in 1-octadecene. Owing to the liquid nature of the matrix at room temperature, the relative orientation of the nanoparticle easy axis can be controlled by an external magnetic field, enabling us to measure how the magnetic properties are modified by the alignment of the particles within the sample. In turn, by employing this strategy, we have found a significant hardness and squareness enhancement of the hysteresis loop in the magnetically oriented system, with the coercive field reaching a value as high as 30.2 kOe at low temperatures. In addition, the magnetic behavior associated with the system under study was supported by additional magnetic measurements, which were ascribed to different events expected to take place throughout the sample characterization, such as the melting process of the 1-octadecene matrix or the NP relaxation under the Brownian mechanism at high temperatures.Fil: Tancredi, Pablo. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; ArgentinaFil: Rivas Rojas, Patricia Carolina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Moscoso Londoño, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Muraca, Diego. Universidade Estadual de Campinas; BrasilFil: Knobel, Marcelo. Universidade Estadual de Campinas; BrasilFil: Socolovsky, Leandro Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Nacional de la Patagonia Austral. Centro de Investigaciones y Transferencia de Santa Cruz; ArgentinaAmerican Institute of Physics2019-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/175137Tancredi, Pablo; Rivas Rojas, Patricia Carolina; Moscoso Londoño, Oscar; Muraca, Diego; Knobel, Marcelo; et al.; Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles; American Institute of Physics; Applied Physics Letters; 115; 26; 12-2019; 1-100003-6951CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.5131259info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5131259info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:16Zoai:ri.conicet.gov.ar:11336/175137instacron: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:34982025-09-03 10:02:16.549CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
title Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
spellingShingle Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
Tancredi, Pablo
magnetic nanoparticles
magnetic coercivity
cobalt ferrite
title_short Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
title_full Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
title_fullStr Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
title_full_unstemmed Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
title_sort Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles
dc.creator.none.fl_str_mv Tancredi, Pablo
Rivas Rojas, Patricia Carolina
Moscoso Londoño, Oscar
Muraca, Diego
Knobel, Marcelo
Socolovsky, Leandro Martín
author Tancredi, Pablo
author_facet Tancredi, Pablo
Rivas Rojas, Patricia Carolina
Moscoso Londoño, Oscar
Muraca, Diego
Knobel, Marcelo
Socolovsky, Leandro Martín
author_role author
author2 Rivas Rojas, Patricia Carolina
Moscoso Londoño, Oscar
Muraca, Diego
Knobel, Marcelo
Socolovsky, Leandro Martín
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv magnetic nanoparticles
magnetic coercivity
cobalt ferrite
topic magnetic nanoparticles
magnetic coercivity
cobalt ferrite
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The present work describes a synthesis and characterization strategy employed to study the magnetic anisotropic properties of a diluted nanoparticulate system. The system under analysis is composed of monodisperse and highly crystalline 16 nm Co0.5Fe2.5O4 nanoparticles (NPs), homogenously dispersed in 1-octadecene. Owing to the liquid nature of the matrix at room temperature, the relative orientation of the nanoparticle easy axis can be controlled by an external magnetic field, enabling us to measure how the magnetic properties are modified by the alignment of the particles within the sample. In turn, by employing this strategy, we have found a significant hardness and squareness enhancement of the hysteresis loop in the magnetically oriented system, with the coercive field reaching a value as high as 30.2 kOe at low temperatures. In addition, the magnetic behavior associated with the system under study was supported by additional magnetic measurements, which were ascribed to different events expected to take place throughout the sample characterization, such as the melting process of the 1-octadecene matrix or the NP relaxation under the Brownian mechanism at high temperatures.
Fil: Tancredi, Pablo. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Fil: Rivas Rojas, Patricia Carolina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Moscoso Londoño, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Muraca, Diego. Universidade Estadual de Campinas; Brasil
Fil: Knobel, Marcelo. Universidade Estadual de Campinas; Brasil
Fil: Socolovsky, Leandro Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Nacional de la Patagonia Austral. Centro de Investigaciones y Transferencia de Santa Cruz; Argentina
description The present work describes a synthesis and characterization strategy employed to study the magnetic anisotropic properties of a diluted nanoparticulate system. The system under analysis is composed of monodisperse and highly crystalline 16 nm Co0.5Fe2.5O4 nanoparticles (NPs), homogenously dispersed in 1-octadecene. Owing to the liquid nature of the matrix at room temperature, the relative orientation of the nanoparticle easy axis can be controlled by an external magnetic field, enabling us to measure how the magnetic properties are modified by the alignment of the particles within the sample. In turn, by employing this strategy, we have found a significant hardness and squareness enhancement of the hysteresis loop in the magnetically oriented system, with the coercive field reaching a value as high as 30.2 kOe at low temperatures. In addition, the magnetic behavior associated with the system under study was supported by additional magnetic measurements, which were ascribed to different events expected to take place throughout the sample characterization, such as the melting process of the 1-octadecene matrix or the NP relaxation under the Brownian mechanism at high temperatures.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
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/11336/175137
Tancredi, Pablo; Rivas Rojas, Patricia Carolina; Moscoso Londoño, Oscar; Muraca, Diego; Knobel, Marcelo; et al.; Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles; American Institute of Physics; Applied Physics Letters; 115; 26; 12-2019; 1-10
0003-6951
CONICET Digital
CONICET
url http://hdl.handle.net/11336/175137
identifier_str_mv Tancredi, Pablo; Rivas Rojas, Patricia Carolina; Moscoso Londoño, Oscar; Muraca, Diego; Knobel, Marcelo; et al.; Significant coercivity enhancement at low temperatures in magnetically oriented cobalt ferrite nanoparticles; American Institute of Physics; Applied Physics Letters; 115; 26; 12-2019; 1-10
0003-6951
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.5131259
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5131259
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 13.13397

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