Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids

Autores
Arana, Mercedes; Jacobo, Silvia Elena; Troiani, Horacio Esteban; Bercoff, Paula Gabriela
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Carbon-coated magnetite nanoparticles (NPs) were synthetized by the mechanochemical method in a high-energy ball mill using hematite and amorphous carbon as precursors. The milling was performed at 700 r/min, with a ball/powder mass ratio of 35 in stainless steel vials withWC balls and Ar atmosphere. The precursor powders were milled from 1 to 18 hours and they were annealed for 2 h in Ar at 500 C. Structural and magnetic properties of the NPs were investigated by X-ray diffraction (XRD), vibrating sample magnetometry and high resolution transmission electron microscopy (HRTEM). XRD patterns, refined with the Rietveld method, show that magnetite is present in samples milled from 6 hours onward and that after milling for 18 hours and annealing, the sample contains a single crystalline phase. Magnetization curves for samples with different milling times show saturation magnetizations ranging from 34.1 emu/g after 1 h to 78.0 emu/g after 18 h. Coercive fields are about 500 Oe for all samples. HRTEM studies reveal that the samples are made of amorphous carbon clusters with magnetite NPs less than or equal to 20 nm. This system seems appropriate for biomedical applications.
Fil: Arana, Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Jacobo, Silvia Elena. Universidad de Buenos Aires. Laboratorio de Fisicoquímica de Materiales Cerámicos Electrónicos ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Tecnologías y Ciencias de la Ingeniería Ingeniero Hilario Fernández Long; Argentina
Fil: Troiani, Horacio Esteban. Comision Nacional de Energia Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Carbon
Coatings
Magnetic Nanoparticles
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:11336/9016
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/9016
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized FerrofluidsArana, MercedesJacobo, Silvia ElenaTroiani, Horacio EstebanBercoff, Paula GabrielaCarbonCoatingsMagnetic Nanoparticleshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Carbon-coated magnetite nanoparticles (NPs) were synthetized by the mechanochemical method in a high-energy ball mill using hematite and amorphous carbon as precursors. The milling was performed at 700 r/min, with a ball/powder mass ratio of 35 in stainless steel vials withWC balls and Ar atmosphere. The precursor powders were milled from 1 to 18 hours and they were annealed for 2 h in Ar at 500 C. Structural and magnetic properties of the NPs were investigated by X-ray diffraction (XRD), vibrating sample magnetometry and high resolution transmission electron microscopy (HRTEM). XRD patterns, refined with the Rietveld method, show that magnetite is present in samples milled from 6 hours onward and that after milling for 18 hours and annealing, the sample contains a single crystalline phase. Magnetization curves for samples with different milling times show saturation magnetizations ranging from 34.1 emu/g after 1 h to 78.0 emu/g after 18 h. Coercive fields are about 500 Oe for all samples. HRTEM studies reveal that the samples are made of amorphous carbon clusters with magnetite NPs less than or equal to 20 nm. This system seems appropriate for biomedical applications.Fil: Arana, Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Jacobo, Silvia Elena. Universidad de Buenos Aires. Laboratorio de Fisicoquímica de Materiales Cerámicos Electrónicos ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Tecnologías y Ciencias de la Ingeniería Ingeniero Hilario Fernández Long; ArgentinaFil: Troiani, Horacio Esteban. Comision Nacional de Energia Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaInstitute Of Electrical And Electronics Engineers2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/9016Arana, Mercedes; Jacobo, Silvia Elena; Troiani, Horacio Esteban; Bercoff, Paula Gabriela; Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids; Institute Of Electrical And Electronics Engineers; Ieee Transactions On Magnetics; 49; 8; 8-2013; 4547-45500018-9464enginfo:eu-repo/semantics/altIdentifier/url/http://ieeexplore.ieee.org/document/6566075/info:eu-repo/semantics/altIdentifier/doi/10.1109/TMAG.2013.2259805info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:07Zoai:ri.conicet.gov.ar:11336/9016instacron: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 10:00:08.099CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
title Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
spellingShingle Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
Arana, Mercedes
Carbon
Coatings
Magnetic Nanoparticles
title_short Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
title_full Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
title_fullStr Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
title_full_unstemmed Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
title_sort Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
dc.creator.none.fl_str_mv Arana, Mercedes
Jacobo, Silvia Elena
Troiani, Horacio Esteban
Bercoff, Paula Gabriela
author Arana, Mercedes
author_facet Arana, Mercedes
Jacobo, Silvia Elena
Troiani, Horacio Esteban
Bercoff, Paula Gabriela
author_role author
author2 Jacobo, Silvia Elena
Troiani, Horacio Esteban
Bercoff, Paula Gabriela
author2_role author
author
author
dc.subject.none.fl_str_mv Carbon
Coatings
Magnetic Nanoparticles
topic Carbon
Coatings
Magnetic Nanoparticles
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Carbon-coated magnetite nanoparticles (NPs) were synthetized by the mechanochemical method in a high-energy ball mill using hematite and amorphous carbon as precursors. The milling was performed at 700 r/min, with a ball/powder mass ratio of 35 in stainless steel vials withWC balls and Ar atmosphere. The precursor powders were milled from 1 to 18 hours and they were annealed for 2 h in Ar at 500 C. Structural and magnetic properties of the NPs were investigated by X-ray diffraction (XRD), vibrating sample magnetometry and high resolution transmission electron microscopy (HRTEM). XRD patterns, refined with the Rietveld method, show that magnetite is present in samples milled from 6 hours onward and that after milling for 18 hours and annealing, the sample contains a single crystalline phase. Magnetization curves for samples with different milling times show saturation magnetizations ranging from 34.1 emu/g after 1 h to 78.0 emu/g after 18 h. Coercive fields are about 500 Oe for all samples. HRTEM studies reveal that the samples are made of amorphous carbon clusters with magnetite NPs less than or equal to 20 nm. This system seems appropriate for biomedical applications.
Fil: Arana, Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Jacobo, Silvia Elena. Universidad de Buenos Aires. Laboratorio de Fisicoquímica de Materiales Cerámicos Electrónicos ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Tecnologías y Ciencias de la Ingeniería Ingeniero Hilario Fernández Long; Argentina
Fil: Troiani, Horacio Esteban. Comision Nacional de Energia Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Física "Enrique Gaviola"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Carbon-coated magnetite nanoparticles (NPs) were synthetized by the mechanochemical method in a high-energy ball mill using hematite and amorphous carbon as precursors. The milling was performed at 700 r/min, with a ball/powder mass ratio of 35 in stainless steel vials withWC balls and Ar atmosphere. The precursor powders were milled from 1 to 18 hours and they were annealed for 2 h in Ar at 500 C. Structural and magnetic properties of the NPs were investigated by X-ray diffraction (XRD), vibrating sample magnetometry and high resolution transmission electron microscopy (HRTEM). XRD patterns, refined with the Rietveld method, show that magnetite is present in samples milled from 6 hours onward and that after milling for 18 hours and annealing, the sample contains a single crystalline phase. Magnetization curves for samples with different milling times show saturation magnetizations ranging from 34.1 emu/g after 1 h to 78.0 emu/g after 18 h. Coercive fields are about 500 Oe for all samples. HRTEM studies reveal that the samples are made of amorphous carbon clusters with magnetite NPs less than or equal to 20 nm. This system seems appropriate for biomedical applications.
publishDate 2013
dc.date.none.fl_str_mv 2013-08
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/11336/9016
Arana, Mercedes; Jacobo, Silvia Elena; Troiani, Horacio Esteban; Bercoff, Paula Gabriela; Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids; Institute Of Electrical And Electronics Engineers; Ieee Transactions On Magnetics; 49; 8; 8-2013; 4547-4550
0018-9464
url http://hdl.handle.net/11336/9016
identifier_str_mv Arana, Mercedes; Jacobo, Silvia Elena; Troiani, Horacio Esteban; Bercoff, Paula Gabriela; Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids; Institute Of Electrical And Electronics Engineers; Ieee Transactions On Magnetics; 49; 8; 8-2013; 4547-4550
0018-9464
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://ieeexplore.ieee.org/document/6566075/
info:eu-repo/semantics/altIdentifier/doi/10.1109/TMAG.2013.2259805
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
application/pdf
dc.publisher.none.fl_str_mv Institute Of Electrical And Electronics Engineers
publisher.none.fl_str_mv Institute Of Electrical And Electronics Engineers
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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