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dc.contributor.author
Arana, Mercedes
dc.contributor.author
Jacobo, Silvia Elena
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Troiani, Horacio Esteban
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Bercoff, Paula Gabriela
dc.date.available
2016-12-07T19:18:56Z
dc.date.issued
2013-08
dc.identifier.citation
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
dc.identifier.issn
0018-9464
dc.identifier.uri
http://hdl.handle.net/11336/9016
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Institute Of Electrical And Electronics Engineers
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Carbon
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Coatings
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Magnetic Nanoparticles
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Nano-procesamiento
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Nanotecnología
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Synthesis and Characterization of Carbon-Coated Magnetite for Functionalized Ferrofluids
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-12-06T16:31:39Z
dc.journal.volume
49
dc.journal.number
8
dc.journal.pagination
4547-4550
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.journal.title
Ieee Transactions On Magnetics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://ieeexplore.ieee.org/document/6566075/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1109/TMAG.2013.2259805
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