On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5

Autores
Aurelio, Gabriela; Bardelli, F.; Junqueira Prado, R.; Sanchez, Rodolfo Daniel; Saleta, Martin Eduardo; Garbarino, G.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Recent studies have shown that the addition of Ca as host ion in the layered compounds RBaCo2O5+δ (with R a rare earth or yttrium) produces a dramatic effect on their magnetic properties, as well as on their Seebeck coefficient and resistivity. Studies performed so far have opened up the possibility that the substitution site for Ca atoms might not be obvious, having been reported at the Y site, at the Ba site, or regarded as not decisive to the ferromagnetism enhancement. In this work, we present a comparative study of Ca-doped cobaltite samples synthesized with two different nominal substitution sites, namely, Ca replacing Ba, and Ca replacing Y. X-ray absorption spectroscopy performed at the Ca, Ba, and Co edges to study the local environment around these elements allowed to unequivocally determine that the substitutional site of Ca is the Y site. This important result helps to clarify the mixed valence state of cobalt as Co3+ and Co4+, which would be responsible for the ferromagnetic interactions, and explains the antiferromagnetic to ferrimagnetic switch occurring already at 10% Ca doping level.
Fil: Aurelio, Gabriela. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bardelli, F.. Institut des Sciences de la Terre; Francia
Fil: Junqueira Prado, R.. Universidade Federal de Mato Grosso Do Sul. Centro de Ciecias Exactas E Tecnología; Brasil
Fil: Sanchez, Rodolfo Daniel. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Saleta, Martin Eduardo. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Garbarino, G.. European Synchrotron Radiation Facility (ESRF); Francia
Materia
Layered Cobaltites
X-Rays Absorption Spectroscopy
Host Cations
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21378
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21378
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5Aurelio, GabrielaBardelli, F.Junqueira Prado, R.Sanchez, Rodolfo DanielSaleta, Martin EduardoGarbarino, G.Layered CobaltitesX-Rays Absorption SpectroscopyHost Cationshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Recent studies have shown that the addition of Ca as host ion in the layered compounds RBaCo2O5+δ (with R a rare earth or yttrium) produces a dramatic effect on their magnetic properties, as well as on their Seebeck coefficient and resistivity. Studies performed so far have opened up the possibility that the substitution site for Ca atoms might not be obvious, having been reported at the Y site, at the Ba site, or regarded as not decisive to the ferromagnetism enhancement. In this work, we present a comparative study of Ca-doped cobaltite samples synthesized with two different nominal substitution sites, namely, Ca replacing Ba, and Ca replacing Y. X-ray absorption spectroscopy performed at the Ca, Ba, and Co edges to study the local environment around these elements allowed to unequivocally determine that the substitutional site of Ca is the Y site. This important result helps to clarify the mixed valence state of cobalt as Co3+ and Co4+, which would be responsible for the ferromagnetic interactions, and explains the antiferromagnetic to ferrimagnetic switch occurring already at 10% Ca doping level.Fil: Aurelio, Gabriela. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bardelli, F.. Institut des Sciences de la Terre; FranciaFil: Junqueira Prado, R.. Universidade Federal de Mato Grosso Do Sul. Centro de Ciecias Exactas E Tecnología; BrasilFil: Sanchez, Rodolfo Daniel. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Saleta, Martin Eduardo. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garbarino, G.. European Synchrotron Radiation Facility (ESRF); FranciaAmerican Chemical Society2013-08-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21378Aurelio, Gabriela; Bardelli, F.; Junqueira Prado, R.; Sanchez, Rodolfo Daniel; Saleta, Martin Eduardo; et al.; On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5; American Chemical Society; Chemistry Of Materials; 25; 16; 6-8-2013; 3307-33140897-4756CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/pdf/10.1021/cm401394xinfo:eu-repo/semantics/altIdentifier/doi/10.1021/cm401394xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:35:56Zoai:ri.conicet.gov.ar:11336/21378instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:35:56.517CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
title On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
spellingShingle On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
Aurelio, Gabriela
Layered Cobaltites
X-Rays Absorption Spectroscopy
Host Cations
title_short On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
title_full On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
title_fullStr On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
title_full_unstemmed On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
title_sort On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5
dc.creator.none.fl_str_mv Aurelio, Gabriela
Bardelli, F.
Junqueira Prado, R.
Sanchez, Rodolfo Daniel
Saleta, Martin Eduardo
Garbarino, G.
author Aurelio, Gabriela
author_facet Aurelio, Gabriela
Bardelli, F.
Junqueira Prado, R.
Sanchez, Rodolfo Daniel
Saleta, Martin Eduardo
Garbarino, G.
author_role author
author2 Bardelli, F.
Junqueira Prado, R.
Sanchez, Rodolfo Daniel
Saleta, Martin Eduardo
Garbarino, G.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Layered Cobaltites
X-Rays Absorption Spectroscopy
Host Cations
topic Layered Cobaltites
X-Rays Absorption Spectroscopy
Host Cations
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Recent studies have shown that the addition of Ca as host ion in the layered compounds RBaCo2O5+δ (with R a rare earth or yttrium) produces a dramatic effect on their magnetic properties, as well as on their Seebeck coefficient and resistivity. Studies performed so far have opened up the possibility that the substitution site for Ca atoms might not be obvious, having been reported at the Y site, at the Ba site, or regarded as not decisive to the ferromagnetism enhancement. In this work, we present a comparative study of Ca-doped cobaltite samples synthesized with two different nominal substitution sites, namely, Ca replacing Ba, and Ca replacing Y. X-ray absorption spectroscopy performed at the Ca, Ba, and Co edges to study the local environment around these elements allowed to unequivocally determine that the substitutional site of Ca is the Y site. This important result helps to clarify the mixed valence state of cobalt as Co3+ and Co4+, which would be responsible for the ferromagnetic interactions, and explains the antiferromagnetic to ferrimagnetic switch occurring already at 10% Ca doping level.
Fil: Aurelio, Gabriela. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bardelli, F.. Institut des Sciences de la Terre; Francia
Fil: Junqueira Prado, R.. Universidade Federal de Mato Grosso Do Sul. Centro de Ciecias Exactas E Tecnología; Brasil
Fil: Sanchez, Rodolfo Daniel. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Saleta, Martin Eduardo. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física. Laboratorio de Resonancias Magnéticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Garbarino, G.. European Synchrotron Radiation Facility (ESRF); Francia
description Recent studies have shown that the addition of Ca as host ion in the layered compounds RBaCo2O5+δ (with R a rare earth or yttrium) produces a dramatic effect on their magnetic properties, as well as on their Seebeck coefficient and resistivity. Studies performed so far have opened up the possibility that the substitution site for Ca atoms might not be obvious, having been reported at the Y site, at the Ba site, or regarded as not decisive to the ferromagnetism enhancement. In this work, we present a comparative study of Ca-doped cobaltite samples synthesized with two different nominal substitution sites, namely, Ca replacing Ba, and Ca replacing Y. X-ray absorption spectroscopy performed at the Ca, Ba, and Co edges to study the local environment around these elements allowed to unequivocally determine that the substitutional site of Ca is the Y site. This important result helps to clarify the mixed valence state of cobalt as Co3+ and Co4+, which would be responsible for the ferromagnetic interactions, and explains the antiferromagnetic to ferrimagnetic switch occurring already at 10% Ca doping level.
publishDate 2013
dc.date.none.fl_str_mv 2013-08-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/21378
Aurelio, Gabriela; Bardelli, F.; Junqueira Prado, R.; Sanchez, Rodolfo Daniel; Saleta, Martin Eduardo; et al.; On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5; American Chemical Society; Chemistry Of Materials; 25; 16; 6-8-2013; 3307-3314
0897-4756
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21378
identifier_str_mv Aurelio, Gabriela; Bardelli, F.; Junqueira Prado, R.; Sanchez, Rodolfo Daniel; Saleta, Martin Eduardo; et al.; On the location of host Ca atoms responsible for ferrimagnetism in the layered cobaltites YBaCo2O5.5; American Chemical Society; Chemistry Of Materials; 25; 16; 6-8-2013; 3307-3314
0897-4756
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/pdf/10.1021/cm401394x
info:eu-repo/semantics/altIdentifier/doi/10.1021/cm401394x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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