Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6

Autores
Lopez, Carlos Alberto; Saleta, Martin Eduardo; Pedregosa, Jose Carmelo; Sanchez, Rodolfo Daniel; Alonso, José A.; Fernández Díaz, María T.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A polycrystalline Ba2Fe2/3Mo4/3O6 double-perovskite has been prepared by decomposition of citrate precursors and subsequent thermal treatment under a reducing atmosphere. The crystal structure has been studied by combined X-ray and neutron powder diffraction (XRPD and NPD). At room temperature, the structure is cubic (Fm-3m) with lattice parameter a = 8.0710(1) Å. It is unchanged between 3 and 320 K. The crystallographic formula is Ba2[Fe0.52(2)Mo0.48(2)]4a[Fe0.14(2)Mo0.86(2)]4bO5.9(2). NPD, electron spin resonance (ESR), and magnetization measurements show spontaneous magnetization below the Curie temperature (TC) = 310 K. The ESR behavior is associated with the presence of localized Fe3+ ions, whereas the transport properties (electrical conductivity and Seebeck effect) suggest the presence of highly correlated electrons in a metallic band with disorder, which can be associated with the Mo t2g electrons. The coexistence of localized and itinerant electrons leads to non-negligible magnetoresistance properties.
Fil: Lopez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
Fil: Saleta, Martin Eduardo. Comision Nacional de Energi­a Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina
Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
Fil: Sanchez, Rodolfo Daniel. Comision Nacional de Energi­a Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina
Fil: Alonso, José A.. Instituto de Ciencia de Materiales de Madrid; España
Fil: Fernández Díaz, María T.. Institut Laue Langevin; Francia
Materia
Ba3femo2o9
Cmr
Perovskite Structure
Fe/Mo Ordering
Highly Correlated Electrons
Transport Properties
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:11336/5846
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/5846
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6Lopez, Carlos AlbertoSaleta, Martin EduardoPedregosa, Jose CarmeloSanchez, Rodolfo DanielAlonso, José A.Fernández Díaz, María T.Ba3femo2o9CmrPerovskite StructureFe/Mo OrderingHighly Correlated ElectronsTransport Propertieshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A polycrystalline Ba2Fe2/3Mo4/3O6 double-perovskite has been prepared by decomposition of citrate precursors and subsequent thermal treatment under a reducing atmosphere. The crystal structure has been studied by combined X-ray and neutron powder diffraction (XRPD and NPD). At room temperature, the structure is cubic (Fm-3m) with lattice parameter a = 8.0710(1) Å. It is unchanged between 3 and 320 K. The crystallographic formula is Ba2[Fe0.52(2)Mo0.48(2)]4a[Fe0.14(2)Mo0.86(2)]4bO5.9(2). NPD, electron spin resonance (ESR), and magnetization measurements show spontaneous magnetization below the Curie temperature (TC) = 310 K. The ESR behavior is associated with the presence of localized Fe3+ ions, whereas the transport properties (electrical conductivity and Seebeck effect) suggest the presence of highly correlated electrons in a metallic band with disorder, which can be associated with the Mo t2g electrons. The coexistence of localized and itinerant electrons leads to non-negligible magnetoresistance properties.Fil: Lopez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; ArgentinaFil: Saleta, Martin Eduardo. Comision Nacional de Energi­a Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); ArgentinaFil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; ArgentinaFil: Sanchez, Rodolfo Daniel. Comision Nacional de Energi­a Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); ArgentinaFil: Alonso, José A.. Instituto de Ciencia de Materiales de Madrid; EspañaFil: Fernández Díaz, María T.. Institut Laue Langevin; FranciaWiley2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5846Lopez, Carlos Alberto; Saleta, Martin Eduardo; Pedregosa, Jose Carmelo; Sanchez, Rodolfo Daniel; Alonso, José A.; et al.; Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6; Wiley; European Journal of Inorganic Chemistry; 2014; 22; 6-2014; 3555-35631434-1948enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/ejic.201402241/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/ejic.201402241info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:54Zoai:ri.conicet.gov.ar:11336/5846instacron: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 10:21:54.418CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
title Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
spellingShingle Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
Lopez, Carlos Alberto
Ba3femo2o9
Cmr
Perovskite Structure
Fe/Mo Ordering
Highly Correlated Electrons
Transport Properties
title_short Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
title_full Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
title_fullStr Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
title_full_unstemmed Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
title_sort Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6
dc.creator.none.fl_str_mv Lopez, Carlos Alberto
Saleta, Martin Eduardo
Pedregosa, Jose Carmelo
Sanchez, Rodolfo Daniel
Alonso, José A.
Fernández Díaz, María T.
author Lopez, Carlos Alberto
author_facet Lopez, Carlos Alberto
Saleta, Martin Eduardo
Pedregosa, Jose Carmelo
Sanchez, Rodolfo Daniel
Alonso, José A.
Fernández Díaz, María T.
author_role author
author2 Saleta, Martin Eduardo
Pedregosa, Jose Carmelo
Sanchez, Rodolfo Daniel
Alonso, José A.
Fernández Díaz, María T.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ba3femo2o9
Cmr
Perovskite Structure
Fe/Mo Ordering
Highly Correlated Electrons
Transport Properties
topic Ba3femo2o9
Cmr
Perovskite Structure
Fe/Mo Ordering
Highly Correlated Electrons
Transport Properties
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A polycrystalline Ba2Fe2/3Mo4/3O6 double-perovskite has been prepared by decomposition of citrate precursors and subsequent thermal treatment under a reducing atmosphere. The crystal structure has been studied by combined X-ray and neutron powder diffraction (XRPD and NPD). At room temperature, the structure is cubic (Fm-3m) with lattice parameter a = 8.0710(1) Å. It is unchanged between 3 and 320 K. The crystallographic formula is Ba2[Fe0.52(2)Mo0.48(2)]4a[Fe0.14(2)Mo0.86(2)]4bO5.9(2). NPD, electron spin resonance (ESR), and magnetization measurements show spontaneous magnetization below the Curie temperature (TC) = 310 K. The ESR behavior is associated with the presence of localized Fe3+ ions, whereas the transport properties (electrical conductivity and Seebeck effect) suggest the presence of highly correlated electrons in a metallic band with disorder, which can be associated with the Mo t2g electrons. The coexistence of localized and itinerant electrons leads to non-negligible magnetoresistance properties.
Fil: Lopez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
Fil: Saleta, Martin Eduardo. Comision Nacional de Energi­a Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina
Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Investigaciones En Tecnología Química; Argentina
Fil: Sanchez, Rodolfo Daniel. Comision Nacional de Energi­a Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina
Fil: Alonso, José A.. Instituto de Ciencia de Materiales de Madrid; España
Fil: Fernández Díaz, María T.. Institut Laue Langevin; Francia
description A polycrystalline Ba2Fe2/3Mo4/3O6 double-perovskite has been prepared by decomposition of citrate precursors and subsequent thermal treatment under a reducing atmosphere. The crystal structure has been studied by combined X-ray and neutron powder diffraction (XRPD and NPD). At room temperature, the structure is cubic (Fm-3m) with lattice parameter a = 8.0710(1) Å. It is unchanged between 3 and 320 K. The crystallographic formula is Ba2[Fe0.52(2)Mo0.48(2)]4a[Fe0.14(2)Mo0.86(2)]4bO5.9(2). NPD, electron spin resonance (ESR), and magnetization measurements show spontaneous magnetization below the Curie temperature (TC) = 310 K. The ESR behavior is associated with the presence of localized Fe3+ ions, whereas the transport properties (electrical conductivity and Seebeck effect) suggest the presence of highly correlated electrons in a metallic band with disorder, which can be associated with the Mo t2g electrons. The coexistence of localized and itinerant electrons leads to non-negligible magnetoresistance properties.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
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/11336/5846
Lopez, Carlos Alberto; Saleta, Martin Eduardo; Pedregosa, Jose Carmelo; Sanchez, Rodolfo Daniel; Alonso, José A.; et al.; Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6; Wiley; European Journal of Inorganic Chemistry; 2014; 22; 6-2014; 3555-3563
1434-1948
url http://hdl.handle.net/11336/5846
identifier_str_mv Lopez, Carlos Alberto; Saleta, Martin Eduardo; Pedregosa, Jose Carmelo; Sanchez, Rodolfo Daniel; Alonso, José A.; et al.; Coexistence of localized and itinerant electrons in the novel double perovskite Ba2Fe2/3Mo4/3O6; Wiley; European Journal of Inorganic Chemistry; 2014; 22; 6-2014; 3555-3563
1434-1948
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/ejic.201402241/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1002/ejic.201402241
info:eu-repo/semantics/altIdentifier/doi/
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
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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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