Co100-xFex magnetic thick films prepared by electrodeposition
Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.
| Main Authors: | , , , |
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| Format: | publishedVersion |
| Language: | eng |
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2022
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| Online Access: | http://hdl.handle.net/11086/28204 http://dx.doi.org/10.1016/j.jallcom.2014.11.197 |
| _version_ | 1801215209265692672 |
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| author | Aguirre, María del Carmen Farias, Eliana Desireé Abraham, José Amado Urreta, Silvia Elena |
| author_facet | Aguirre, María del Carmen Farias, Eliana Desireé Abraham, José Amado Urreta, Silvia Elena |
| author_sort | Aguirre, María del Carmen |
| collection | Repositorio Digital Universitario |
| description | Fil: Aguirre, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. |
| format | publishedVersion |
| id | rdu-unc.28204 |
| institution | Universidad Nacional de Cordoba |
| language | eng |
| publishDate | 2022 |
| record_format | dspace |
| spelling | rdu-unc.282042022-10-13T11:08:47Z Co100-xFex magnetic thick films prepared by electrodeposition Aguirre, María del Carmen Farias, Eliana Desireé Abraham, José Amado Urreta, Silvia Elena CoFe films Electrodeposition Nanostructured layers Soft ferromagnetism Nucleation Growth mechanisms 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. 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) 2022-08-16T15:05:20Z 2022-08-16T15:05:20Z 2015 article 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 eng Attribution-NonCommercial-NoDerivatives 4.0 International restrictedAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Impreso; Electrónico y/o Digital ISSN: 0925-8388 |
| spellingShingle | CoFe films Electrodeposition Nanostructured layers Soft ferromagnetism Nucleation Growth mechanisms Aguirre, María del Carmen Farias, Eliana Desireé Abraham, José Amado Urreta, Silvia Elena Co100-xFex magnetic thick films prepared by electrodeposition |
| title | 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_short | Co100-xFex magnetic thick films prepared by electrodeposition |
| title_sort | co100 xfex magnetic thick films prepared by electrodeposition |
| topic | CoFe films Electrodeposition Nanostructured layers Soft ferromagnetism Nucleation Growth mechanisms |
| url | 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 |
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