Relaxation mechanisms in ultra-low damping Fe80Co20 thin films

Autores
Velázquez Rodriguez, Daniel; Gomez, Javier Enrique; Alejandro, Gabriela; Avilés Félix, Luis; Van Landeghem, Melissa; Goovaerts, Etienne; Butera, Alejandro Ricardo
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ferromagnetic thin films with ultra-low damping constants (α) are intensively studied for applications in spintronic devices. We report here the influence of the sputtering conditions (deposition power and temperature) on the magnetic properties of Fe80Co20/Ta bilayers deposited on MgO (0 0 1) and Si (0 0 1) which have been studied using ferromagnetic resonance (FMR) and magneto-optic Kerr-effect (MOKE) techniques. We have found that for the studied fabrication conditions the samples deposited on MgO (0 0 1) have [1 0 0] epitaxial growth with a cubic anisotropy field Hc ~ 300 Oe, while those sputtered on Si (0 0 1) grow polycrystalline with a small uniaxial anisotropy due to the deposition conditions. With measurements at different excitation frequencies we have determined exceptionally low damping values for ferromagnetic conductors (α ~ 3 × 10−3), which makes the Fe80Co20/Ta system an excellent candidate for future applications in spintronic devices. From the analysis of the dependence of the FMR linewidth on the orientation of the applied magnetic field and the excitation frequency in FMR experiments, we were able to separate the contribution of the different relaxation mechanisms (Gilbert damping, two magnon scattering and mosaicity) to the linewidth and to explain quantitatively the observed behavior.
Fil: Velázquez Rodriguez, Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Gomez, Javier Enrique. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Alejandro, Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Avilés Félix, Luis. Universite Grenoble Alpes; Francia
Fil: Van Landeghem, Melissa. Universite Libre de Bruxelles. Universiteit Antwerpen; Bélgica
Fil: Goovaerts, Etienne. Universite Libre de Bruxelles. Universiteit Antwerpen; Bélgica
Fil: Butera, Alejandro Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
ULTRA-LOW MAGNETIC DAMPING
CUBIC ANISOTROPY
TWO MAGNON SCATTERING
MOSAICITY
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:11336/126799
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/126799
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Relaxation mechanisms in ultra-low damping Fe80Co20 thin filmsVelázquez Rodriguez, DanielGomez, Javier EnriqueAlejandro, GabrielaAvilés Félix, LuisVan Landeghem, MelissaGoovaerts, EtienneButera, Alejandro RicardoULTRA-LOW MAGNETIC DAMPINGCUBIC ANISOTROPYTWO MAGNON SCATTERINGMOSAICITYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Ferromagnetic thin films with ultra-low damping constants (α) are intensively studied for applications in spintronic devices. We report here the influence of the sputtering conditions (deposition power and temperature) on the magnetic properties of Fe80Co20/Ta bilayers deposited on MgO (0 0 1) and Si (0 0 1) which have been studied using ferromagnetic resonance (FMR) and magneto-optic Kerr-effect (MOKE) techniques. We have found that for the studied fabrication conditions the samples deposited on MgO (0 0 1) have [1 0 0] epitaxial growth with a cubic anisotropy field Hc ~ 300 Oe, while those sputtered on Si (0 0 1) grow polycrystalline with a small uniaxial anisotropy due to the deposition conditions. With measurements at different excitation frequencies we have determined exceptionally low damping values for ferromagnetic conductors (α ~ 3 × 10−3), which makes the Fe80Co20/Ta system an excellent candidate for future applications in spintronic devices. From the analysis of the dependence of the FMR linewidth on the orientation of the applied magnetic field and the excitation frequency in FMR experiments, we were able to separate the contribution of the different relaxation mechanisms (Gilbert damping, two magnon scattering and mosaicity) to the linewidth and to explain quantitatively the observed behavior.Fil: Velázquez Rodriguez, Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Gomez, Javier Enrique. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Alejandro, Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Avilés Félix, Luis. Universite Grenoble Alpes; FranciaFil: Van Landeghem, Melissa. Universite Libre de Bruxelles. Universiteit Antwerpen; BélgicaFil: Goovaerts, Etienne. Universite Libre de Bruxelles. Universiteit Antwerpen; BélgicaFil: Butera, Alejandro Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaElsevier Science2020-06-15info: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/11336/126799Velázquez Rodriguez, Daniel; Gomez, Javier Enrique; Alejandro, Gabriela; Avilés Félix, Luis; Van Landeghem, Melissa; et al.; Relaxation mechanisms in ultra-low damping Fe80Co20 thin films; Elsevier Science; Journal of Magnetism and Magnetic Materials; 504; 166692; 15-6-2020; 1-80304-8853CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S030488532030072Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmmm.2020.166692info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-06-10T09:47:10Zoai:ri.conicet.gov.ar:11336/126799instacron: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:34982026-06-10 09:47:10.938CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
title Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
spellingShingle Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
Velázquez Rodriguez, Daniel
ULTRA-LOW MAGNETIC DAMPING
CUBIC ANISOTROPY
TWO MAGNON SCATTERING
MOSAICITY
title_short Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
title_full Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
title_fullStr Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
title_full_unstemmed Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
title_sort Relaxation mechanisms in ultra-low damping Fe80Co20 thin films
dc.creator.none.fl_str_mv Velázquez Rodriguez, Daniel
Gomez, Javier Enrique
Alejandro, Gabriela
Avilés Félix, Luis
Van Landeghem, Melissa
Goovaerts, Etienne
Butera, Alejandro Ricardo
author Velázquez Rodriguez, Daniel
author_facet Velázquez Rodriguez, Daniel
Gomez, Javier Enrique
Alejandro, Gabriela
Avilés Félix, Luis
Van Landeghem, Melissa
Goovaerts, Etienne
Butera, Alejandro Ricardo
author_role author
author2 Gomez, Javier Enrique
Alejandro, Gabriela
Avilés Félix, Luis
Van Landeghem, Melissa
Goovaerts, Etienne
Butera, Alejandro Ricardo
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv ULTRA-LOW MAGNETIC DAMPING
CUBIC ANISOTROPY
TWO MAGNON SCATTERING
MOSAICITY
topic ULTRA-LOW MAGNETIC DAMPING
CUBIC ANISOTROPY
TWO MAGNON SCATTERING
MOSAICITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Ferromagnetic thin films with ultra-low damping constants (α) are intensively studied for applications in spintronic devices. We report here the influence of the sputtering conditions (deposition power and temperature) on the magnetic properties of Fe80Co20/Ta bilayers deposited on MgO (0 0 1) and Si (0 0 1) which have been studied using ferromagnetic resonance (FMR) and magneto-optic Kerr-effect (MOKE) techniques. We have found that for the studied fabrication conditions the samples deposited on MgO (0 0 1) have [1 0 0] epitaxial growth with a cubic anisotropy field Hc ~ 300 Oe, while those sputtered on Si (0 0 1) grow polycrystalline with a small uniaxial anisotropy due to the deposition conditions. With measurements at different excitation frequencies we have determined exceptionally low damping values for ferromagnetic conductors (α ~ 3 × 10−3), which makes the Fe80Co20/Ta system an excellent candidate for future applications in spintronic devices. From the analysis of the dependence of the FMR linewidth on the orientation of the applied magnetic field and the excitation frequency in FMR experiments, we were able to separate the contribution of the different relaxation mechanisms (Gilbert damping, two magnon scattering and mosaicity) to the linewidth and to explain quantitatively the observed behavior.
Fil: Velázquez Rodriguez, Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Gomez, Javier Enrique. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Alejandro, Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Avilés Félix, Luis. Universite Grenoble Alpes; Francia
Fil: Van Landeghem, Melissa. Universite Libre de Bruxelles. Universiteit Antwerpen; Bélgica
Fil: Goovaerts, Etienne. Universite Libre de Bruxelles. Universiteit Antwerpen; Bélgica
Fil: Butera, Alejandro Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description Ferromagnetic thin films with ultra-low damping constants (α) are intensively studied for applications in spintronic devices. We report here the influence of the sputtering conditions (deposition power and temperature) on the magnetic properties of Fe80Co20/Ta bilayers deposited on MgO (0 0 1) and Si (0 0 1) which have been studied using ferromagnetic resonance (FMR) and magneto-optic Kerr-effect (MOKE) techniques. We have found that for the studied fabrication conditions the samples deposited on MgO (0 0 1) have [1 0 0] epitaxial growth with a cubic anisotropy field Hc ~ 300 Oe, while those sputtered on Si (0 0 1) grow polycrystalline with a small uniaxial anisotropy due to the deposition conditions. With measurements at different excitation frequencies we have determined exceptionally low damping values for ferromagnetic conductors (α ~ 3 × 10−3), which makes the Fe80Co20/Ta system an excellent candidate for future applications in spintronic devices. From the analysis of the dependence of the FMR linewidth on the orientation of the applied magnetic field and the excitation frequency in FMR experiments, we were able to separate the contribution of the different relaxation mechanisms (Gilbert damping, two magnon scattering and mosaicity) to the linewidth and to explain quantitatively the observed behavior.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-15
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/11336/126799
Velázquez Rodriguez, Daniel; Gomez, Javier Enrique; Alejandro, Gabriela; Avilés Félix, Luis; Van Landeghem, Melissa; et al.; Relaxation mechanisms in ultra-low damping Fe80Co20 thin films; Elsevier Science; Journal of Magnetism and Magnetic Materials; 504; 166692; 15-6-2020; 1-8
0304-8853
CONICET Digital
CONICET
url http://hdl.handle.net/11336/126799
identifier_str_mv Velázquez Rodriguez, Daniel; Gomez, Javier Enrique; Alejandro, Gabriela; Avilés Félix, Luis; Van Landeghem, Melissa; et al.; Relaxation mechanisms in ultra-low damping Fe80Co20 thin films; Elsevier Science; Journal of Magnetism and Magnetic Materials; 504; 166692; 15-6-2020; 1-8
0304-8853
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S030488532030072X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmmm.2020.166692
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 Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 12.83248

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