Co100-xFex magnetic thick films prepared by electrodeposition

Autores
Aguirre, María del Carmen; Farias, Eliana Desireé; Abraham, José Amado; Urreta, Silvia Elena
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Farias, Eliana Desireé. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.
Fil: Abraham, José Amado. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Co–Fe films are grown onto plane pre-treated Cu foils; the effects of the alloy composition on the morphology and the crystal texture of the electrodeposited films and their anisotropic magnetic hysteresis properties are explored. Nucleation and crystallization mechanisms in these Co-rich layers are also investigated with pulse-reverse plating techniques, using the first cathodic pulse current–time transients. In the diffusion controlled regime the deposition mechanism is found to involve progressive nucleation with three-dimensional (3D) growth, except for the equiatomic Fe 50Co50 solution where nucleation tends to become instantaneous. The different morphologies and size scales observed are described and correlated with coercivity. The films are electrodeposited onto electrochemically pre-treated Cu substrates from feeds of nominal Fe/Co mol ratios between 0/100 and 50/50. The composition of the deposited layers, as determined by energy dispersive X-ray spectroscopy, are quite close to the nominal values. Cyclic voltammetry determinations exhibit only a single reduction process on the cathode, indicating that a unique (Co100xFex) phase grows. Depending on composition and on the substrate pre-treatment, these layers exhibit textures with features of different sizes. X ray diffraction patterns indicate that the nanostructures with Fe contents above 20 at.% crystallize in a body-centered cubic cell, while samples with Fe contents below this value are fcc. Regarding the effect of composition on the morphology, Co and Co-rich layers are compact, with large (100–300 nm) agglomerates of quite equiaxed, densely packed particles (average 50 nm); as the iron content increases above 15 at.%, faceted particles 100 nm in size are observed. All the electrodeposited layers are soft ferromagnetic at room temperature, with an in plane easy axis; coercive fields/forces between 10 mT and 71 mT are measured at 300 K.
publishedVersion
Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Farias, Eliana Desireé. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.
Fil: Abraham, José Amado. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Nano-materiales (producción y propiedades)
Fuente
ISSN: 0925-8388
Materia
CoFe films
Electrodeposition
Nanostructured layers
Soft ferromagnetism
Nucleation
Growth mechanisms
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/28204
Acceder
id RDUUNC_673465a5134abfd3b66f2d7d8b638e08
oai_identifier_str oai:rdu.unc.edu.ar:11086/28204
network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling Co100-xFex magnetic thick films prepared by electrodepositionAguirre, María del CarmenFarias, Eliana DesireéAbraham, José AmadoUrreta, Silvia ElenaCoFe filmsElectrodepositionNanostructured layersSoft ferromagnetismNucleationGrowth mechanismsFil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina.Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Farias, Eliana Desireé. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Abraham, José Amado. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Co–Fe films are grown onto plane pre-treated Cu foils; the effects of the alloy composition on the morphology and the crystal texture of the electrodeposited films and their anisotropic magnetic hysteresis properties are explored. Nucleation and crystallization mechanisms in these Co-rich layers are also investigated with pulse-reverse plating techniques, using the first cathodic pulse current–time transients. In the diffusion controlled regime the deposition mechanism is found to involve progressive nucleation with three-dimensional (3D) growth, except for the equiatomic Fe 50Co50 solution where nucleation tends to become instantaneous. The different morphologies and size scales observed are described and correlated with coercivity. The films are electrodeposited onto electrochemically pre-treated Cu substrates from feeds of nominal Fe/Co mol ratios between 0/100 and 50/50. The composition of the deposited layers, as determined by energy dispersive X-ray spectroscopy, are quite close to the nominal values. Cyclic voltammetry determinations exhibit only a single reduction process on the cathode, indicating that a unique (Co100xFex) phase grows. Depending on composition and on the substrate pre-treatment, these layers exhibit textures with features of different sizes. X ray diffraction patterns indicate that the nanostructures with Fe contents above 20 at.% crystallize in a body-centered cubic cell, while samples with Fe contents below this value are fcc. Regarding the effect of composition on the morphology, Co and Co-rich layers are compact, with large (100–300 nm) agglomerates of quite equiaxed, densely packed particles (average 50 nm); as the iron content increases above 15 at.%, faceted particles 100 nm in size are observed. All the electrodeposited layers are soft ferromagnetic at room temperature, with an in plane easy axis; coercive fields/forces between 10 mT and 71 mT are measured at 300 K.publishedVersionFil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina.Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Farias, Eliana Desireé. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Abraham, José Amado. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Nano-materiales (producción y propiedades)2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/11086/28204http://dx.doi.org/10.1016/j.jallcom.2014.11.197http://dx.doi.org/10.1016/j.jallcom.2014.11.197ISSN: 0925-8388reponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNCenginfo:eu-repo/semantics/openAccess2025-10-23T11:18:03Zoai:rdu.unc.edu.ar:11086/28204Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-10-23 11:18:04.273Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Co100-xFex magnetic thick films prepared by electrodeposition
title Co100-xFex magnetic thick films prepared by electrodeposition
spellingShingle Co100-xFex magnetic thick films prepared by electrodeposition
Aguirre, María del Carmen
CoFe films
Electrodeposition
Nanostructured layers
Soft ferromagnetism
Nucleation
Growth mechanisms
title_short Co100-xFex magnetic thick films prepared by electrodeposition
title_full Co100-xFex magnetic thick films prepared by electrodeposition
title_fullStr Co100-xFex magnetic thick films prepared by electrodeposition
title_full_unstemmed Co100-xFex magnetic thick films prepared by electrodeposition
title_sort Co100-xFex magnetic thick films prepared by electrodeposition
dc.creator.none.fl_str_mv Aguirre, María del Carmen
Farias, Eliana Desireé
Abraham, José Amado
Urreta, Silvia Elena
author Aguirre, María del Carmen
author_facet Aguirre, María del Carmen
Farias, Eliana Desireé
Abraham, José Amado
Urreta, Silvia Elena
author_role author
author2 Farias, Eliana Desireé
Abraham, José Amado
Urreta, Silvia Elena
author2_role author
author
author
dc.subject.none.fl_str_mv CoFe films
Electrodeposition
Nanostructured layers
Soft ferromagnetism
Nucleation
Growth mechanisms
topic CoFe films
Electrodeposition
Nanostructured layers
Soft ferromagnetism
Nucleation
Growth mechanisms
dc.description.none.fl_txt_mv Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Farias, Eliana Desireé. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.
Fil: Abraham, José Amado. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Co–Fe films are grown onto plane pre-treated Cu foils; the effects of the alloy composition on the morphology and the crystal texture of the electrodeposited films and their anisotropic magnetic hysteresis properties are explored. Nucleation and crystallization mechanisms in these Co-rich layers are also investigated with pulse-reverse plating techniques, using the first cathodic pulse current–time transients. In the diffusion controlled regime the deposition mechanism is found to involve progressive nucleation with three-dimensional (3D) growth, except for the equiatomic Fe 50Co50 solution where nucleation tends to become instantaneous. The different morphologies and size scales observed are described and correlated with coercivity. The films are electrodeposited onto electrochemically pre-treated Cu substrates from feeds of nominal Fe/Co mol ratios between 0/100 and 50/50. The composition of the deposited layers, as determined by energy dispersive X-ray spectroscopy, are quite close to the nominal values. Cyclic voltammetry determinations exhibit only a single reduction process on the cathode, indicating that a unique (Co100xFex) phase grows. Depending on composition and on the substrate pre-treatment, these layers exhibit textures with features of different sizes. X ray diffraction patterns indicate that the nanostructures with Fe contents above 20 at.% crystallize in a body-centered cubic cell, while samples with Fe contents below this value are fcc. Regarding the effect of composition on the morphology, Co and Co-rich layers are compact, with large (100–300 nm) agglomerates of quite equiaxed, densely packed particles (average 50 nm); as the iron content increases above 15 at.%, faceted particles 100 nm in size are observed. All the electrodeposited layers are soft ferromagnetic at room temperature, with an in plane easy axis; coercive fields/forces between 10 mT and 71 mT are measured at 300 K.
publishedVersion
Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina.
Fil: Aguirre, María del Carmen. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Farias, Eliana Desireé. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas; Argentina.
Fil: Abraham, José Amado. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Fil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.
Nano-materiales (producción y propiedades)
description Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
publishDate 2015
dc.date.none.fl_str_mv 2015
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/11086/28204
http://dx.doi.org/10.1016/j.jallcom.2014.11.197
http://dx.doi.org/10.1016/j.jallcom.2014.11.197
url http://hdl.handle.net/11086/28204
http://dx.doi.org/10.1016/j.jallcom.2014.11.197
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv ISSN: 0925-8388
reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
collection Repositorio Digital Universitario (UNC)
instname_str Universidad Nacional de Córdoba
instacron_str UNC
institution UNC
repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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score 12.982451

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