Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect

In this work, the field dependence of the magnetocaloric effect of Gd bulk samples has been enhanced through nanostructuring of the material. Nanostructuring consists in multilayers preparation by alternative rf-sputtering deposition of Gd layers and Ti spacers onto glass substrates. The results obt...

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Detalhes bibliográficos
Autores: Doblas, David, Moreno Ramírez, Luis Miguel, Franco García, Victorino, Conde Amiano, Alejandro, Svalov, A.V., Kurlyandskaya, G.V., Franco García, Victorino (Coordinador)
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Recursos:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/99453
Acesso em linha:https://hdl.handle.net/11441/99453
https://doi.org/10.1016/j.matdes.2016.11.085
Access Level:acceso abierto
Palavra-chave:Magnetocaloric effect
Magnetic multilayers
Magnetic entropy change
Curie temperature distribution
Finite size scaling
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spelling Nanostructuring as a procedure to control the field dependence of the magnetocaloric effectDoblas, DavidMoreno Ramírez, Luis MiguelFranco García, VictorinoConde Amiano, AlejandroSvalov, A.V.Kurlyandskaya, G.V.Franco García, Victorino (Coordinador)Magnetocaloric effectMagnetic multilayersMagnetic entropy changeCurie temperature distributionFinite size scalingIn this work, the field dependence of the magnetocaloric effect of Gd bulk samples has been enhanced through nanostructuring of the material. Nanostructuring consists in multilayers preparation by alternative rf-sputtering deposition of Gd layers and Ti spacers onto glass substrates. The results obtained for the multilayers were compared to those obtained for the Gd bulk. Assuming a power law for the field dependence of the magnetic entropy change (ΔSM ∝ Hn ), higher field dependences close to the transition in a wider temperature range are obtained for the multilayer material (n = 1.0) with respect to the bulk counterpart (n = 0.78). The effect of a Curie temperature distribution in the multilayer material (due to variations of the layer thickness) has been studied through numerical simulations to explain the observed field dependence of the magnetocaloric effect, obtaining a remarkable agreement between experiments and results.Ministerio de Economía y Competitividad español y EU-FEDER. MAT2013-45165-P y MAT2016-77265-RMinistry of Education and Science of the Russian Federation. Project No. 2582ElsevierFranco García, VictorinoFísica de la Materia CondensadaMinisterio de Economía y Competitividad (MINECO). EspañaEuropean Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)Junta de AndalucíaMinistry of Education and Science of the Russian Federation2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/99453https://doi.org/10.1016/j.matdes.2016.11.085reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMaterials and Design, 114, 214-219.MAT2013-45165-PMAT2016-77265-RProject No. 2582https://doi.org/10.1016/j.matdes.2016.11.085info:eu-repo/semantics/openAccessoai:idus.us.es:11441/994532026-06-17T12:51:07Z
dc.title.none.fl_str_mv Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
title Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
spellingShingle Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
Doblas, David
Magnetocaloric effect
Magnetic multilayers
Magnetic entropy change
Curie temperature distribution
Finite size scaling
title_short Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
title_full Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
title_fullStr Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
title_full_unstemmed Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
title_sort Nanostructuring as a procedure to control the field dependence of the magnetocaloric effect
dc.creator.none.fl_str_mv Doblas, David
Moreno Ramírez, Luis Miguel
Franco García, Victorino
Conde Amiano, Alejandro
Svalov, A.V.
Kurlyandskaya, G.V.
Franco García, Victorino (Coordinador)
author Doblas, David
author_facet Doblas, David
Moreno Ramírez, Luis Miguel
Franco García, Victorino
Conde Amiano, Alejandro
Svalov, A.V.
Kurlyandskaya, G.V.
Franco García, Victorino (Coordinador)
author_role author
author2 Moreno Ramírez, Luis Miguel
Franco García, Victorino
Conde Amiano, Alejandro
Svalov, A.V.
Kurlyandskaya, G.V.
Franco García, Victorino (Coordinador)
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Franco García, Victorino
Física de la Materia Condensada
Ministerio de Economía y Competitividad (MINECO). España
European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)
Junta de Andalucía
Ministry of Education and Science of the Russian Federation
dc.subject.none.fl_str_mv Magnetocaloric effect
Magnetic multilayers
Magnetic entropy change
Curie temperature distribution
Finite size scaling
topic Magnetocaloric effect
Magnetic multilayers
Magnetic entropy change
Curie temperature distribution
Finite size scaling
description In this work, the field dependence of the magnetocaloric effect of Gd bulk samples has been enhanced through nanostructuring of the material. Nanostructuring consists in multilayers preparation by alternative rf-sputtering deposition of Gd layers and Ti spacers onto glass substrates. The results obtained for the multilayers were compared to those obtained for the Gd bulk. Assuming a power law for the field dependence of the magnetic entropy change (ΔSM ∝ Hn ), higher field dependences close to the transition in a wider temperature range are obtained for the multilayer material (n = 1.0) with respect to the bulk counterpart (n = 0.78). The effect of a Curie temperature distribution in the multilayer material (due to variations of the layer thickness) has been studied through numerical simulations to explain the observed field dependence of the magnetocaloric effect, obtaining a remarkable agreement between experiments and results.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/99453
https://doi.org/10.1016/j.matdes.2016.11.085
url https://hdl.handle.net/11441/99453
https://doi.org/10.1016/j.matdes.2016.11.085
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Materials and Design, 114, 214-219.
MAT2013-45165-P
MAT2016-77265-R
Project No. 2582
https://doi.org/10.1016/j.matdes.2016.11.085
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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