Magnetocaloric effect of thin Dy films

Detalhes bibliográficos
Autor(a) principal: Mello, V.D.
Data de Publicação: 2006
Outros Autores: Dantas, Ana L., Carriço, Artur da Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/28926
https://doi.org/10.1016/j.ssc.2006.09.013
Resumo: We report a theoretical study of the magnetocaloric effect (MCE) of Dy thin films, and show that the confinement of spins in the direction perpendicular to the surfaces leads to a considerable enhancement of the MCE. The adiabatic temperature change, 1T , for external field strength change, 1H, of the order of a few kOe, is much larger than what is found in bulk Dy, reaching 1T 1H = 6 K/T for ultra-thin films.
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spelling Mello, V.D.Dantas, Ana L.Carriço, Artur da Silva2020-05-05T23:51:02Z2020-05-05T23:51:02Z2006MELLO, V. D. DE ; CARRIÇO, A. S. . Magnetocaloric effect of thin Dy films. Solid State Communications, v. 140, p. 447, 2006. Disponível em: https://www.sciencedirect.com/science/article/pii/S003810980600826X?via%3Dihub .Acesso em: 08 abr. 2020.https://repositorio.ufrn.br/jspui/handle/123456789/28926https://doi.org/10.1016/j.ssc.2006.09.013ELSEVIERAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessA. Helimagnets; D. Phase transitions of magnetic films; E. Giant magnetocaloric effectMagnetocaloric effect of thin Dy filmsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe report a theoretical study of the magnetocaloric effect (MCE) of Dy thin films, and show that the confinement of spins in the direction perpendicular to the surfaces leads to a considerable enhancement of the MCE. The adiabatic temperature change, 1T , for external field strength change, 1H, of the order of a few kOe, is much larger than what is found in bulk Dy, reaching 1T 1H = 6 K/T for ultra-thin films.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALMagnetocaloricEffectOfThin_Carrico_2006.pdfapplication/pdf470421https://repositorio.ufrn.br/bitstream/123456789/28926/1/MagnetocaloricEffectOfThin_Carrico_2006.pdfbcc727dce56bc6d98e883dcb3782b89cMD51CC-LICENSElicense_rdfapplication/octet-stream811https://repositorio.ufrn.br/bitstream/123456789/28926/2/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD52LICENSElicense.txttext/plain1484https://repositorio.ufrn.br/bitstream/123456789/28926/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTMagnetocaloricEffectOfThin_Carrico_2006.pdf.txtMagnetocaloricEffectOfThin_Carrico_2006.pdf.txtExtracted texttext/plain23465https://repositorio.ufrn.br/bitstream/123456789/28926/4/MagnetocaloricEffectOfThin_Carrico_2006.pdf.txtb2149d814d2dc619a369d0cbc117a3d3MD54THUMBNAILMagnetocaloricEffectOfThin_Carrico_2006.pdf.jpgMagnetocaloricEffectOfThin_Carrico_2006.pdf.jpgGenerated Thumbnailimage/jpeg1730https://repositorio.ufrn.br/bitstream/123456789/28926/5/MagnetocaloricEffectOfThin_Carrico_2006.pdf.jpg1728655dcbaa82899050ed379c116493MD55123456789/289262020-05-10 04:30:50.48oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-10T07:30:50Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Magnetocaloric effect of thin Dy films
title Magnetocaloric effect of thin Dy films
spellingShingle Magnetocaloric effect of thin Dy films
Mello, V.D.
A. Helimagnets; D. Phase transitions of magnetic films; E. Giant magnetocaloric effect
title_short Magnetocaloric effect of thin Dy films
title_full Magnetocaloric effect of thin Dy films
title_fullStr Magnetocaloric effect of thin Dy films
title_full_unstemmed Magnetocaloric effect of thin Dy films
title_sort Magnetocaloric effect of thin Dy films
author Mello, V.D.
author_facet Mello, V.D.
Dantas, Ana L.
Carriço, Artur da Silva
author_role author
author2 Dantas, Ana L.
Carriço, Artur da Silva
author2_role author
author
dc.contributor.author.fl_str_mv Mello, V.D.
Dantas, Ana L.
Carriço, Artur da Silva
dc.subject.por.fl_str_mv A. Helimagnets; D. Phase transitions of magnetic films; E. Giant magnetocaloric effect
topic A. Helimagnets; D. Phase transitions of magnetic films; E. Giant magnetocaloric effect
description We report a theoretical study of the magnetocaloric effect (MCE) of Dy thin films, and show that the confinement of spins in the direction perpendicular to the surfaces leads to a considerable enhancement of the MCE. The adiabatic temperature change, 1T , for external field strength change, 1H, of the order of a few kOe, is much larger than what is found in bulk Dy, reaching 1T 1H = 6 K/T for ultra-thin films.
publishDate 2006
dc.date.issued.fl_str_mv 2006
dc.date.accessioned.fl_str_mv 2020-05-05T23:51:02Z
dc.date.available.fl_str_mv 2020-05-05T23:51:02Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.citation.fl_str_mv MELLO, V. D. DE ; CARRIÇO, A. S. . Magnetocaloric effect of thin Dy films. Solid State Communications, v. 140, p. 447, 2006. Disponível em: https://www.sciencedirect.com/science/article/pii/S003810980600826X?via%3Dihub .Acesso em: 08 abr. 2020.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/28926
dc.identifier.doi.none.fl_str_mv https://doi.org/10.1016/j.ssc.2006.09.013
identifier_str_mv MELLO, V. D. DE ; CARRIÇO, A. S. . Magnetocaloric effect of thin Dy films. Solid State Communications, v. 140, p. 447, 2006. Disponível em: https://www.sciencedirect.com/science/article/pii/S003810980600826X?via%3Dihub .Acesso em: 08 abr. 2020.
url https://repositorio.ufrn.br/jspui/handle/123456789/28926
https://doi.org/10.1016/j.ssc.2006.09.013
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
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