Cobalt ferrite films: nano-polishing and magnetic properties

Autores
Bilovol, Vitaliy; Pampillo, Laura G.; Meier, Dagmar; Wolff, Ulrike; Saccone, Fabio Daniel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
CoFe2O4 films were deposited on Si [(100) or (111)] substrates by pulsed laser deposition, varying substrate temperature and deposition time. All films showed highly (111)-preferred orientation. Magnetic measurements (hysteresis loops) at room temperature indicated that the films have in-plane magnetic anisotropy. By atomic force microscopy, the surface topology revealed an average roughness of approximately 15 nm due to the presence of droplets. To define the relevance of droplets on the films' magnetic properties, we applied a nanopolishing technique after which the surfaces became notoriously smoother. As a consequence of this surface modification, we found that the hysteresis loops (measured again after nanopolishing) revealed changes in the magnetic response of the samples. The thinner films ((t ~50) nm) revealed waist-type hysteresis loops with diminished values of the coercive field, while the thickest film ((t ~100) nm) increased its coercive field without qualitative change in its loop shape. We attributed the altered magnetic response to different mechanisms that depend on sample thickness. For the thinner films, an additional anisotropy (to that existing in the plane) was induced after the nanopolishing procedure. For the thickest film, it was observed that differences are present after the elimination of the droplets, showing their important role in the magnetic response of the films.
Fil: Bilovol, Vitaliy. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina
Fil: Pampillo, Laura G.. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; Alemania
Fil: Meier, Dagmar. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; Alemania
Fil: Wolff, Ulrike. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; Alemania
Fil: Saccone, Fabio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina
Materia
Magnetic Hysteresis
Magnetic Films
Perpendicular Magnetic Anisotropy
Substrates
Silicon
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:11336/14851
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/14851
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Cobalt ferrite films: nano-polishing and magnetic propertiesBilovol, VitaliyPampillo, Laura G.Meier, DagmarWolff, UlrikeSaccone, Fabio DanielMagnetic HysteresisMagnetic FilmsPerpendicular Magnetic AnisotropySubstratesSiliconhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2CoFe2O4 films were deposited on Si [(100) or (111)] substrates by pulsed laser deposition, varying substrate temperature and deposition time. All films showed highly (111)-preferred orientation. Magnetic measurements (hysteresis loops) at room temperature indicated that the films have in-plane magnetic anisotropy. By atomic force microscopy, the surface topology revealed an average roughness of approximately 15 nm due to the presence of droplets. To define the relevance of droplets on the films' magnetic properties, we applied a nanopolishing technique after which the surfaces became notoriously smoother. As a consequence of this surface modification, we found that the hysteresis loops (measured again after nanopolishing) revealed changes in the magnetic response of the samples. The thinner films ((t ~50) nm) revealed waist-type hysteresis loops with diminished values of the coercive field, while the thickest film ((t ~100) nm) increased its coercive field without qualitative change in its loop shape. We attributed the altered magnetic response to different mechanisms that depend on sample thickness. For the thinner films, an additional anisotropy (to that existing in the plane) was induced after the nanopolishing procedure. For the thickest film, it was observed that differences are present after the elimination of the droplets, showing their important role in the magnetic response of the films.Fil: Bilovol, Vitaliy. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; ArgentinaFil: Pampillo, Laura G.. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; AlemaniaFil: Meier, Dagmar. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; AlemaniaFil: Wolff, Ulrike. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; AlemaniaFil: Saccone, Fabio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; ArgentinaInstitute of Electrical and Electronics Engineers2014-06info: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/11336/14851Bilovol, Vitaliy; Pampillo, Laura G.; Meier, Dagmar; Wolff, Ulrike; Saccone, Fabio Daniel; Cobalt ferrite films: nano-polishing and magnetic properties; Institute of Electrical and Electronics Engineers; IEEE Transactions on Magnetics; 50; 9; 6-2014; 1-50018-94641941-0069enginfo:eu-repo/semantics/altIdentifier/url/http://ieeexplore.ieee.org/document/6787010/?arnumber=6787010info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1109/TMAG.2014.2316481info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:36Zoai:ri.conicet.gov.ar:11336/14851instacron: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:34982025-09-03 10:04:36.42CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cobalt ferrite films: nano-polishing and magnetic properties
title Cobalt ferrite films: nano-polishing and magnetic properties
spellingShingle Cobalt ferrite films: nano-polishing and magnetic properties
Bilovol, Vitaliy
Magnetic Hysteresis
Magnetic Films
Perpendicular Magnetic Anisotropy
Substrates
Silicon
title_short Cobalt ferrite films: nano-polishing and magnetic properties
title_full Cobalt ferrite films: nano-polishing and magnetic properties
title_fullStr Cobalt ferrite films: nano-polishing and magnetic properties
title_full_unstemmed Cobalt ferrite films: nano-polishing and magnetic properties
title_sort Cobalt ferrite films: nano-polishing and magnetic properties
dc.creator.none.fl_str_mv Bilovol, Vitaliy
Pampillo, Laura G.
Meier, Dagmar
Wolff, Ulrike
Saccone, Fabio Daniel
author Bilovol, Vitaliy
author_facet Bilovol, Vitaliy
Pampillo, Laura G.
Meier, Dagmar
Wolff, Ulrike
Saccone, Fabio Daniel
author_role author
author2 Pampillo, Laura G.
Meier, Dagmar
Wolff, Ulrike
Saccone, Fabio Daniel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Magnetic Hysteresis
Magnetic Films
Perpendicular Magnetic Anisotropy
Substrates
Silicon
topic Magnetic Hysteresis
Magnetic Films
Perpendicular Magnetic Anisotropy
Substrates
Silicon
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv CoFe2O4 films were deposited on Si [(100) or (111)] substrates by pulsed laser deposition, varying substrate temperature and deposition time. All films showed highly (111)-preferred orientation. Magnetic measurements (hysteresis loops) at room temperature indicated that the films have in-plane magnetic anisotropy. By atomic force microscopy, the surface topology revealed an average roughness of approximately 15 nm due to the presence of droplets. To define the relevance of droplets on the films' magnetic properties, we applied a nanopolishing technique after which the surfaces became notoriously smoother. As a consequence of this surface modification, we found that the hysteresis loops (measured again after nanopolishing) revealed changes in the magnetic response of the samples. The thinner films ((t ~50) nm) revealed waist-type hysteresis loops with diminished values of the coercive field, while the thickest film ((t ~100) nm) increased its coercive field without qualitative change in its loop shape. We attributed the altered magnetic response to different mechanisms that depend on sample thickness. For the thinner films, an additional anisotropy (to that existing in the plane) was induced after the nanopolishing procedure. For the thickest film, it was observed that differences are present after the elimination of the droplets, showing their important role in the magnetic response of the films.
Fil: Bilovol, Vitaliy. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina
Fil: Pampillo, Laura G.. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; Alemania
Fil: Meier, Dagmar. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; Alemania
Fil: Wolff, Ulrike. Leibniz-Institut für Festkörper-und Werkstoffforschung Dresden; Alemania
Fil: Saccone, Fabio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica. Laboratorio de Sólidos Amorfos; Argentina
description CoFe2O4 films were deposited on Si [(100) or (111)] substrates by pulsed laser deposition, varying substrate temperature and deposition time. All films showed highly (111)-preferred orientation. Magnetic measurements (hysteresis loops) at room temperature indicated that the films have in-plane magnetic anisotropy. By atomic force microscopy, the surface topology revealed an average roughness of approximately 15 nm due to the presence of droplets. To define the relevance of droplets on the films' magnetic properties, we applied a nanopolishing technique after which the surfaces became notoriously smoother. As a consequence of this surface modification, we found that the hysteresis loops (measured again after nanopolishing) revealed changes in the magnetic response of the samples. The thinner films ((t ~50) nm) revealed waist-type hysteresis loops with diminished values of the coercive field, while the thickest film ((t ~100) nm) increased its coercive field without qualitative change in its loop shape. We attributed the altered magnetic response to different mechanisms that depend on sample thickness. For the thinner films, an additional anisotropy (to that existing in the plane) was induced after the nanopolishing procedure. For the thickest film, it was observed that differences are present after the elimination of the droplets, showing their important role in the magnetic response of the films.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
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/11336/14851
Bilovol, Vitaliy; Pampillo, Laura G.; Meier, Dagmar; Wolff, Ulrike; Saccone, Fabio Daniel; Cobalt ferrite films: nano-polishing and magnetic properties; Institute of Electrical and Electronics Engineers; IEEE Transactions on Magnetics; 50; 9; 6-2014; 1-5
0018-9464
1941-0069
url http://hdl.handle.net/11336/14851
identifier_str_mv Bilovol, Vitaliy; Pampillo, Laura G.; Meier, Dagmar; Wolff, Ulrike; Saccone, Fabio Daniel; Cobalt ferrite films: nano-polishing and magnetic properties; Institute of Electrical and Electronics Engineers; IEEE Transactions on Magnetics; 50; 9; 6-2014; 1-5
0018-9464
1941-0069
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://ieeexplore.ieee.org/document/6787010/?arnumber=6787010
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1109/TMAG.2014.2316481
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 Institute of Electrical and Electronics Engineers
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers
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
_version_ 1842269865178562560
score 13.13397

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