Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet

We have studied the magnetic properties of Cu-doped porous silica gels and found that the system seems to be ferromagnetic up to room temperature. This result is fascinating because the amount of Cu ranges from 0.15% to 3% in weight of the total sample. Magnetization, hysteresis loops, and EPR exper...

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Authors: Crespo del Arco, Patricia, Hernando Grande, Antonio, Bovier, C., Serughetti, J., Duval, E.
Format: article
Publication Date:1993
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/60128
Online Access:https://hdl.handle.net/20.500.14352/60128
Access Level:Open access
Keyword:538.9
Nanocrystalline ferromagnets
Particle-size
Glasses
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/60128
network_acronym_str ES
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repository_id_str
spelling Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnetCrespo del Arco, PatriciaHernando Grande, AntonioBovier, C.Serughetti, J.Bovier, C.Duval, E.538.9Nanocrystalline ferromagnetsParticle-sizeGlassesFísica de materialesFísica del estado sólido2211 Física del Estado SólidoWe have studied the magnetic properties of Cu-doped porous silica gels and found that the system seems to be ferromagnetic up to room temperature. This result is fascinating because the amount of Cu ranges from 0.15% to 3% in weight of the total sample. Magnetization, hysteresis loops, and EPR experiments are presented. The paramagnetic signal of the silica gel without doping is negligible. On the other hand, the analysis of the magnetic impurities by x-ray fluorescence shows that these impurities can account for only 10% of the magnetization observed at 300 K.American Physical SocietyUniversidad Complutense de Madrid19931993-01-0119931993-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/60128reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/601282026-06-02T12:44:21Z
dc.title.none.fl_str_mv Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
title Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
spellingShingle Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
Crespo del Arco, Patricia
538.9
Nanocrystalline ferromagnets
Particle-size
Glasses
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
title_full Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
title_fullStr Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
title_full_unstemmed Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
title_sort Magnetic-properties of Cu-doped porous silica-gels - a possible Cu ferromagnet
dc.creator.none.fl_str_mv Crespo del Arco, Patricia
Hernando Grande, Antonio
Bovier, C.
Serughetti, J.
Bovier, C.
Duval, E.
author Crespo del Arco, Patricia
author_facet Crespo del Arco, Patricia
Hernando Grande, Antonio
Bovier, C.
Serughetti, J.
Duval, E.
author_role author
author2 Hernando Grande, Antonio
Bovier, C.
Serughetti, J.
Duval, E.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Nanocrystalline ferromagnets
Particle-size
Glasses
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Nanocrystalline ferromagnets
Particle-size
Glasses
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description We have studied the magnetic properties of Cu-doped porous silica gels and found that the system seems to be ferromagnetic up to room temperature. This result is fascinating because the amount of Cu ranges from 0.15% to 3% in weight of the total sample. Magnetization, hysteresis loops, and EPR experiments are presented. The paramagnetic signal of the silica gel without doping is negligible. On the other hand, the analysis of the magnetic impurities by x-ray fluorescence shows that these impurities can account for only 10% of the magnetization observed at 300 K.
publishDate 1993
dc.date.none.fl_str_mv 1993
1993-01-01
1993
1993-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/60128
url https://hdl.handle.net/20.500.14352/60128
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
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
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411498097377280
score 15.298079

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