Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films

Autores
Alvarez, Nadia Roxana; Sallica Leva, E.; Valente, R. C.; Vásquez Mansilla, M.; Gómez, J.; Milano, Julian; Butera, Alejandro Ricardo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have investigated the relationship between the domain structure and the magnetic interactions in a series of FePt ferromagnetic thin films of varying thickness. As-made films grow in the magnetically soft and chemically disordered A1 phase that may have two distinct domain structures. Above a critical thickness dcr ∼ 30 nm the presence of an out of plane anisotropy induces the formation of stripes, while for d < dcr planar domains occur. Magnetic interactions have been characterized using the well known DC demagnetization - isothermal remanent magnetization remanence protocols, δM plots, and magnetic viscosity measurements. We have observed a strong correlation between the domain configuration and the sign of the magnetic interactions. Planar domains are associated with positive exchange-like interactions, while stripe domains have a strong negative dipolar-like contribution. In this last case we have found a close correlation between the interaction parameter and the surface dipolar energy of the stripe domain structure. Using time dependent magnetic viscosity measurements, we have also estimated an average activation volume for magnetic reversal, 〈V ac〉∼1.37×104 nm3, which is approximately independent of the film thickness or the stripe period.
Fil: Alvarez, Nadia Roxana. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Sallica Leva, E.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Valente, R. C.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Vásquez Mansilla, M.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Gómez, J.. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina
Fil: Milano, Julian. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Butera, Alejandro Ricardo. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
Magnetic Films
Demagnetization
Thin film structure
Remanence
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:11336/180544
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/180544
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin filmsAlvarez, Nadia RoxanaSallica Leva, E.Valente, R. C.Vásquez Mansilla, M.Gómez, J.Milano, JulianButera, Alejandro RicardoMagnetic FilmsDemagnetizationThin film structureRemanencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have investigated the relationship between the domain structure and the magnetic interactions in a series of FePt ferromagnetic thin films of varying thickness. As-made films grow in the magnetically soft and chemically disordered A1 phase that may have two distinct domain structures. Above a critical thickness dcr ∼ 30 nm the presence of an out of plane anisotropy induces the formation of stripes, while for d < dcr planar domains occur. Magnetic interactions have been characterized using the well known DC demagnetization - isothermal remanent magnetization remanence protocols, δM plots, and magnetic viscosity measurements. We have observed a strong correlation between the domain configuration and the sign of the magnetic interactions. Planar domains are associated with positive exchange-like interactions, while stripe domains have a strong negative dipolar-like contribution. In this last case we have found a close correlation between the interaction parameter and the surface dipolar energy of the stripe domain structure. Using time dependent magnetic viscosity measurements, we have also estimated an average activation volume for magnetic reversal, 〈V ac〉∼1.37×104 nm3, which is approximately independent of the film thickness or the stripe period.Fil: Alvarez, Nadia Roxana. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Sallica Leva, E.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Valente, R. C.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Vásquez Mansilla, M.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Gómez, J.. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; ArgentinaFil: Milano, Julian. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Butera, Alejandro Ricardo. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaAmerican Institute of Physics2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/180544Alvarez, Nadia Roxana; Sallica Leva, E.; Valente, R. C.; Vásquez Mansilla, M.; Gómez, J.; et al.; Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films; American Institute of Physics; Journal of Applied Physics; 115; 8; 2-2014; 83907-839170021-8979CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/jap/115/8/10.1063/1.4866685info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4866685info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:16:04Zoai:ri.conicet.gov.ar:11336/180544instacron: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:34982025-09-17 11:16:04.888CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
title Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
spellingShingle Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
Alvarez, Nadia Roxana
Magnetic Films
Demagnetization
Thin film structure
Remanence
title_short Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
title_full Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
title_fullStr Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
title_full_unstemmed Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
title_sort Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films
dc.creator.none.fl_str_mv Alvarez, Nadia Roxana
Sallica Leva, E.
Valente, R. C.
Vásquez Mansilla, M.
Gómez, J.
Milano, Julian
Butera, Alejandro Ricardo
author Alvarez, Nadia Roxana
author_facet Alvarez, Nadia Roxana
Sallica Leva, E.
Valente, R. C.
Vásquez Mansilla, M.
Gómez, J.
Milano, Julian
Butera, Alejandro Ricardo
author_role author
author2 Sallica Leva, E.
Valente, R. C.
Vásquez Mansilla, M.
Gómez, J.
Milano, Julian
Butera, Alejandro Ricardo
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Magnetic Films
Demagnetization
Thin film structure
Remanence
topic Magnetic Films
Demagnetization
Thin film structure
Remanence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We have investigated the relationship between the domain structure and the magnetic interactions in a series of FePt ferromagnetic thin films of varying thickness. As-made films grow in the magnetically soft and chemically disordered A1 phase that may have two distinct domain structures. Above a critical thickness dcr ∼ 30 nm the presence of an out of plane anisotropy induces the formation of stripes, while for d < dcr planar domains occur. Magnetic interactions have been characterized using the well known DC demagnetization - isothermal remanent magnetization remanence protocols, δM plots, and magnetic viscosity measurements. We have observed a strong correlation between the domain configuration and the sign of the magnetic interactions. Planar domains are associated with positive exchange-like interactions, while stripe domains have a strong negative dipolar-like contribution. In this last case we have found a close correlation between the interaction parameter and the surface dipolar energy of the stripe domain structure. Using time dependent magnetic viscosity measurements, we have also estimated an average activation volume for magnetic reversal, 〈V ac〉∼1.37×104 nm3, which is approximately independent of the film thickness or the stripe period.
Fil: Alvarez, Nadia Roxana. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Sallica Leva, E.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Valente, R. C.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Vásquez Mansilla, M.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Gómez, J.. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina
Fil: Milano, Julian. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Butera, Alejandro Ricardo. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description We have investigated the relationship between the domain structure and the magnetic interactions in a series of FePt ferromagnetic thin films of varying thickness. As-made films grow in the magnetically soft and chemically disordered A1 phase that may have two distinct domain structures. Above a critical thickness dcr ∼ 30 nm the presence of an out of plane anisotropy induces the formation of stripes, while for d < dcr planar domains occur. Magnetic interactions have been characterized using the well known DC demagnetization - isothermal remanent magnetization remanence protocols, δM plots, and magnetic viscosity measurements. We have observed a strong correlation between the domain configuration and the sign of the magnetic interactions. Planar domains are associated with positive exchange-like interactions, while stripe domains have a strong negative dipolar-like contribution. In this last case we have found a close correlation between the interaction parameter and the surface dipolar energy of the stripe domain structure. Using time dependent magnetic viscosity measurements, we have also estimated an average activation volume for magnetic reversal, 〈V ac〉∼1.37×104 nm3, which is approximately independent of the film thickness or the stripe period.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
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/11336/180544
Alvarez, Nadia Roxana; Sallica Leva, E.; Valente, R. C.; Vásquez Mansilla, M.; Gómez, J.; et al.; Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films; American Institute of Physics; Journal of Applied Physics; 115; 8; 2-2014; 83907-83917
0021-8979
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180544
identifier_str_mv Alvarez, Nadia Roxana; Sallica Leva, E.; Valente, R. C.; Vásquez Mansilla, M.; Gómez, J.; et al.; Correlation between magnetic interactions and domain structure in A1 FePt ferromagnetic thin films; American Institute of Physics; Journal of Applied Physics; 115; 8; 2-2014; 83907-83917
0021-8979
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/jap/115/8/10.1063/1.4866685
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4866685
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
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 13.001348

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