Kondo-like behavior and GMR effect in granular Cu90Co10 microwires

Detalhes bibliográficos
Autor(a) principal: Zhukova, Valentina A.
Data de Publicação: 2017
Outros Autores: Miňo, Jakub, Del Val, Juan José, Varga, Rastislav, Martinez Pino, Gerardo Guido, Baibich, Mario Norberto, Ipatov, Mihail, Zhukov, Arkady
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/169001
Resumo: We observed a significant increase of the giant magnetoresistance (GMR) effect (up to 32% after the adequate annealing) and Kondo-like behavior in Cu90Co10 glass-coated microwires. Observed enhancement of the GMR effect can be interpreted considering the formation of the fine Co grains inside the Cu matrix as well as appearance of lamellar nanostructures allowing enhancement of the MR effect after annealing. Observed experimental data are discussed considering the regions with higher Co-ions content responsible for the presence of Co inhomogeneities or clusters and the regions with lower Co-ions content behaving as the magnetic impurities in the metallic host. Observed resistivity minimum on temperature dependence can be described considering Kondo effect mechanism involving magnetic impurities in metals. But the other mechanisms responsible for the resistivity minimum have been considered.
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spelling Zhukova, Valentina A.Miňo, JakubDel Val, Juan JoséVarga, RastislavMartinez Pino, Gerardo GuidoBaibich, Mario NorbertoIpatov, MihailZhukov, Arkady2017-09-28T02:28:13Z20172158-3226http://hdl.handle.net/10183/169001001025564We observed a significant increase of the giant magnetoresistance (GMR) effect (up to 32% after the adequate annealing) and Kondo-like behavior in Cu90Co10 glass-coated microwires. Observed enhancement of the GMR effect can be interpreted considering the formation of the fine Co grains inside the Cu matrix as well as appearance of lamellar nanostructures allowing enhancement of the MR effect after annealing. Observed experimental data are discussed considering the regions with higher Co-ions content responsible for the presence of Co inhomogeneities or clusters and the regions with lower Co-ions content behaving as the magnetic impurities in the metallic host. Observed resistivity minimum on temperature dependence can be described considering Kondo effect mechanism involving magnetic impurities in metals. But the other mechanisms responsible for the resistivity minimum have been considered.application/pdfengAIP Advances. Melville, NY. Vol. 7, no. 5 (May 2017), 055906, 8 p.Efeito kondoMagnetorresistência giganteLigas de cobaltoLigas de cobreMateriais granularesKondo-like behavior and GMR effect in granular Cu90Co10 microwiresEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001025564.pdf001025564.pdfTexto completo (inglês)application/pdf1938373http://www.lume.ufrgs.br/bitstream/10183/169001/1/001025564.pdfab2a04cc11770262ddb1739c5113992fMD51TEXT001025564.pdf.txt001025564.pdf.txtExtracted Texttext/plain23612http://www.lume.ufrgs.br/bitstream/10183/169001/2/001025564.pdf.txt9ac80f87d55116ef64fa34578fda5702MD52THUMBNAIL001025564.pdf.jpg001025564.pdf.jpgGenerated Thumbnailimage/jpeg1853http://www.lume.ufrgs.br/bitstream/10183/169001/3/001025564.pdf.jpgb29b30548a8973d60d67e1581be1fba8MD5310183/1690012023-08-27 03:43:05.269491oai:www.lume.ufrgs.br:10183/169001Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-27T06:43:05Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
title Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
spellingShingle Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
Zhukova, Valentina A.
Efeito kondo
Magnetorresistência gigante
Ligas de cobalto
Ligas de cobre
Materiais granulares
title_short Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
title_full Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
title_fullStr Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
title_full_unstemmed Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
title_sort Kondo-like behavior and GMR effect in granular Cu90Co10 microwires
author Zhukova, Valentina A.
author_facet Zhukova, Valentina A.
Miňo, Jakub
Del Val, Juan José
Varga, Rastislav
Martinez Pino, Gerardo Guido
Baibich, Mario Norberto
Ipatov, Mihail
Zhukov, Arkady
author_role author
author2 Miňo, Jakub
Del Val, Juan José
Varga, Rastislav
Martinez Pino, Gerardo Guido
Baibich, Mario Norberto
Ipatov, Mihail
Zhukov, Arkady
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Zhukova, Valentina A.
Miňo, Jakub
Del Val, Juan José
Varga, Rastislav
Martinez Pino, Gerardo Guido
Baibich, Mario Norberto
Ipatov, Mihail
Zhukov, Arkady
dc.subject.por.fl_str_mv Efeito kondo
Magnetorresistência gigante
Ligas de cobalto
Ligas de cobre
Materiais granulares
topic Efeito kondo
Magnetorresistência gigante
Ligas de cobalto
Ligas de cobre
Materiais granulares
description We observed a significant increase of the giant magnetoresistance (GMR) effect (up to 32% after the adequate annealing) and Kondo-like behavior in Cu90Co10 glass-coated microwires. Observed enhancement of the GMR effect can be interpreted considering the formation of the fine Co grains inside the Cu matrix as well as appearance of lamellar nanostructures allowing enhancement of the MR effect after annealing. Observed experimental data are discussed considering the regions with higher Co-ions content responsible for the presence of Co inhomogeneities or clusters and the regions with lower Co-ions content behaving as the magnetic impurities in the metallic host. Observed resistivity minimum on temperature dependence can be described considering Kondo effect mechanism involving magnetic impurities in metals. But the other mechanisms responsible for the resistivity minimum have been considered.
publishDate 2017
dc.date.accessioned.fl_str_mv 2017-09-28T02:28:13Z
dc.date.issued.fl_str_mv 2017
dc.type.driver.fl_str_mv Estrangeiro
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dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/169001
dc.identifier.issn.pt_BR.fl_str_mv 2158-3226
dc.identifier.nrb.pt_BR.fl_str_mv 001025564
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv AIP Advances. Melville, NY. Vol. 7, no. 5 (May 2017), 055906, 8 p.
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