Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys

Magnetic, structural, and transport properties of as quenched and annealed Co10Cu90 samples have been investigated using x¿ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as¿quenched sample annealed at 450°C for 30 min. The magnetic and transport propert...

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Authors: Yu, Ronghai, Zhang, Xixiang, Tejada Palacios, Javier, Knobel, M., Tiberto, P., Allia, P.
Format: article
Status:Published version
Publication Date:1995
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/22071
Online Access:https://hdl.handle.net/2445/22071
Access Level:Open access
Keyword:Aliatges coure-cobalt
Propietats magnètiques
Magnetoresistència
Materials granulars
Copper-cobalt alloys
Magnetic properties
Magnetoresistance
Granular materials
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spelling Magnetic properties and giant magnetoresistance in melt-spun CoCu alloysYu, RonghaiZhang, XixiangTejada Palacios, JavierKnobel, M.Tiberto, P.Allia, P.Aliatges coure-cobaltPropietats magnètiquesMagnetoresistènciaMaterials granularsCopper-cobalt alloysMagnetic propertiesMagnetoresistanceGranular materialsMagnetic, structural, and transport properties of as quenched and annealed Co10Cu90 samples have been investigated using x¿ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as¿quenched sample annealed at 450°C for 30 min. The magnetic and transport properties closely correlate with the microstructure, mainly with Co magnetic particle size and its distribution. For thermal annealing the as quenched samples below 600°C, the Co particle diameters increase from 4.0 to 6.0 nm with a magnetoresistance (MR) drop from 33.0% to 5.0% at 10 K. Comparison with the theory indicates that the interfacial electron spin¿dependent scattering mechanism correlates with GMR for Co particle diameters up to about 6.0 nm.American Institute of Physics201220121995info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion6 p.application/pdfhttps://hdl.handle.net/2445/22071Articles publicats en revistes (Física de la Matèria Condensada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: http://dx.doi.org/10.1063/1.360613Journal of Applied Physics, 1995, vol. 78, núm. 1, p. 392-397http://dx.doi.org/10.1063/1.360613(c) American Institute of Physics, 1995info:eu-repo/semantics/openAccessoai:recercat.cat:2445/220712026-05-29T05:05:01Z
dc.title.none.fl_str_mv Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
title Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
spellingShingle Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
Yu, Ronghai
Aliatges coure-cobalt
Propietats magnètiques
Magnetoresistència
Materials granulars
Copper-cobalt alloys
Magnetic properties
Magnetoresistance
Granular materials
title_short Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
title_full Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
title_fullStr Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
title_full_unstemmed Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
title_sort Magnetic properties and giant magnetoresistance in melt-spun CoCu alloys
dc.creator.none.fl_str_mv Yu, Ronghai
Zhang, Xixiang
Tejada Palacios, Javier
Knobel, M.
Tiberto, P.
Allia, P.
author Yu, Ronghai
author_facet Yu, Ronghai
Zhang, Xixiang
Tejada Palacios, Javier
Knobel, M.
Tiberto, P.
Allia, P.
author_role author
author2 Zhang, Xixiang
Tejada Palacios, Javier
Knobel, M.
Tiberto, P.
Allia, P.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Aliatges coure-cobalt
Propietats magnètiques
Magnetoresistència
Materials granulars
Copper-cobalt alloys
Magnetic properties
Magnetoresistance
Granular materials
topic Aliatges coure-cobalt
Propietats magnètiques
Magnetoresistència
Materials granulars
Copper-cobalt alloys
Magnetic properties
Magnetoresistance
Granular materials
description Magnetic, structural, and transport properties of as quenched and annealed Co10Cu90 samples have been investigated using x¿ray diffraction and a SQUID magnetometer. The largest value of MR change was observed for the as¿quenched sample annealed at 450°C for 30 min. The magnetic and transport properties closely correlate with the microstructure, mainly with Co magnetic particle size and its distribution. For thermal annealing the as quenched samples below 600°C, the Co particle diameters increase from 4.0 to 6.0 nm with a magnetoresistance (MR) drop from 33.0% to 5.0% at 10 K. Comparison with the theory indicates that the interfacial electron spin¿dependent scattering mechanism correlates with GMR for Co particle diameters up to about 6.0 nm.
publishDate 1995
dc.date.none.fl_str_mv 1995
2012
2012
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/2445/22071
url https://hdl.handle.net/2445/22071
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1063/1.360613
Journal of Applied Physics, 1995, vol. 78, núm. 1, p. 392-397
http://dx.doi.org/10.1063/1.360613
dc.rights.none.fl_str_mv (c) American Institute of Physics, 1995
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Institute of Physics, 1995
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6 p.
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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