Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias

Pinned synthetic ferrimagnets (syFerri) with perpendicular-to-plane magnetic anisotropy, of the form AP1/Ru/AP2/FeMn [where AP1 and AP2 are (Co/Pt) multilayers], have been prepared and characterized. The magnitudes of the exchange bias fields of both AP1 and AP2 can be tuned at room temperature by s...

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Autores: Sort, Jordi|||0000-0003-1213-3639, Rodmacq, B., Auffret, Stéphane, Dieny, Bernard
Tipo de recurso: artículo
Fecha de publicación:2003
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:116248
Acceso en línea:https://ddd.uab.cat/record/116248
https://dx.doi.org/urn:doi:10.1063/1.1606495
Access Level:acceso abierto
Palabra clave:Magnetic anisotropy
Exchange interactions
Multilayers
Magnetic sensors
Magnetic tunnel junctions
Magnetization reversals
Spin valves
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spelling Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange biasSort, Jordi|||0000-0003-1213-3639Rodmacq, B.Auffret, StéphaneDieny, BernardMagnetic anisotropyExchange interactionsMultilayersMagnetic sensorsMagnetic tunnel junctionsMagnetization reversalsSpin valvesPinned synthetic ferrimagnets (syFerri) with perpendicular-to-plane magnetic anisotropy, of the form AP1/Ru/AP2/FeMn [where AP1 and AP2 are (Co/Pt) multilayers], have been prepared and characterized. The magnitudes of the exchange bias fields of both AP1 and AP2 can be tuned at room temperature by simply varying the relative number of (Co/Pt) repeats in each multilayer. This effect can be quantitatively interpreted by considering the different energy contributions involved during magnetization reversal. Moreover, from the values of these fields, the characteristic parameters of the system (i.e., coupling strength through the Ru and AP2/FeMn pinning energy), can be evaluated. Interestingly, an extended plateau with a virtually constant magnetization is observed around zero field when the number of Co/Pt repeats in AP1 is equal or larger than in AP2. This is very appealing for field sensor or memories applications using spin valves or tunnel junctions with perpendicular anisotropy, since it offers a large dynamic range over which the magnetic configuration of the syFerri remains stable.American Physical Society 22003-01-0120032003-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/116248https://dx.doi.org/urn:doi:10.1063/1.1606495reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1162482026-06-06T12:50:31Z
dc.title.none.fl_str_mv Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
title Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
spellingShingle Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
Sort, Jordi|||0000-0003-1213-3639
Magnetic anisotropy
Exchange interactions
Multilayers
Magnetic sensors
Magnetic tunnel junctions
Magnetization reversals
Spin valves
title_short Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
title_full Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
title_fullStr Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
title_full_unstemmed Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
title_sort Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias
dc.creator.none.fl_str_mv Sort, Jordi|||0000-0003-1213-3639
Rodmacq, B.
Auffret, Stéphane
Dieny, Bernard
author Sort, Jordi|||0000-0003-1213-3639
author_facet Sort, Jordi|||0000-0003-1213-3639
Rodmacq, B.
Auffret, Stéphane
Dieny, Bernard
author_role author
author2 Rodmacq, B.
Auffret, Stéphane
Dieny, Bernard
author2_role author
author
author
dc.contributor.none.fl_str_mv American Physical Society
dc.subject.none.fl_str_mv Magnetic anisotropy
Exchange interactions
Multilayers
Magnetic sensors
Magnetic tunnel junctions
Magnetization reversals
Spin valves
topic Magnetic anisotropy
Exchange interactions
Multilayers
Magnetic sensors
Magnetic tunnel junctions
Magnetization reversals
Spin valves
description Pinned synthetic ferrimagnets (syFerri) with perpendicular-to-plane magnetic anisotropy, of the form AP1/Ru/AP2/FeMn [where AP1 and AP2 are (Co/Pt) multilayers], have been prepared and characterized. The magnitudes of the exchange bias fields of both AP1 and AP2 can be tuned at room temperature by simply varying the relative number of (Co/Pt) repeats in each multilayer. This effect can be quantitatively interpreted by considering the different energy contributions involved during magnetization reversal. Moreover, from the values of these fields, the characteristic parameters of the system (i.e., coupling strength through the Ru and AP2/FeMn pinning energy), can be evaluated. Interestingly, an extended plateau with a virtually constant magnetization is observed around zero field when the number of Co/Pt repeats in AP1 is equal or larger than in AP2. This is very appealing for field sensor or memories applications using spin valves or tunnel junctions with perpendicular anisotropy, since it offers a large dynamic range over which the magnetic configuration of the syFerri remains stable.
publishDate 2003
dc.date.none.fl_str_mv 2
2003-01-01
2003
2003-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/116248
https://dx.doi.org/urn:doi:10.1063/1.1606495
url https://ddd.uab.cat/record/116248
https://dx.doi.org/urn:doi:10.1063/1.1606495
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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