Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments

Autores
Mondragón Rodríguez, G. C.; Gönüllü, Y.; Ferri, Davide; Eyssler, Arnim; Otal, Eugenio Hernan; Saruhan, B.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Perovskite-type oxides of composition BaTi 0.9 Rh 0.1 O 3±δ were prepared following a new chemical route that avoids the formation of hydroxyl species and precipitation, and allows the homogeneous distribution of Rh in the final mixed metal oxide. The high dispersion of Rh and the formation of the solid solution between Rh and the BaTiO 3 perovskite is confirmed by means of X-ray diffraction (XRD) and extended X-ray absorption fine structure spectroscopy (EXAFS). The presence of Rh stabilized the hexagonal BaTi 0.9 Rh 0.1 O 3±δ phase, which decomposes into barium orthotitanate (BaTi 2 O 4 ) and metallic Rh°in reducing environment. This phase transition starts already at 700°C and is only partially completed at 900°C suggesting that part of the Rh present in the perovskite lattice might not be easily reduced by hydrogen. These aspects and further open questions are discussed.
Fil: Mondragón Rodríguez, G. C.. German Aerospace Center; Alemania
Fil: Gönüllü, Y.. University of Cologne; Alemania
Fil: Ferri, Davide. Paul Scherrer Institut; Suiza
Fil: Eyssler, Arnim. Swiss Federal Laboratories for Materials Science and Technology; Suiza
Fil: Otal, Eugenio Hernan. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estratégico para la Defensa. Ministerio de Defensa. Unidad de Investigación y Desarrollo Estratégico para la Defensa; Argentina
Fil: Saruhan, B.. German Aerospace Center; Alemania
Materia
Chemical Synthesis
Microstructure
Perovskite
Xafs
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:11336/81838
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/81838
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environmentsMondragón Rodríguez, G. C.Gönüllü, Y.Ferri, DavideEyssler, ArnimOtal, Eugenio HernanSaruhan, B.Chemical SynthesisMicrostructurePerovskiteXafshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Perovskite-type oxides of composition BaTi 0.9 Rh 0.1 O 3±δ were prepared following a new chemical route that avoids the formation of hydroxyl species and precipitation, and allows the homogeneous distribution of Rh in the final mixed metal oxide. The high dispersion of Rh and the formation of the solid solution between Rh and the BaTiO 3 perovskite is confirmed by means of X-ray diffraction (XRD) and extended X-ray absorption fine structure spectroscopy (EXAFS). The presence of Rh stabilized the hexagonal BaTi 0.9 Rh 0.1 O 3±δ phase, which decomposes into barium orthotitanate (BaTi 2 O 4 ) and metallic Rh°in reducing environment. This phase transition starts already at 700°C and is only partially completed at 900°C suggesting that part of the Rh present in the perovskite lattice might not be easily reduced by hydrogen. These aspects and further open questions are discussed.Fil: Mondragón Rodríguez, G. C.. German Aerospace Center; AlemaniaFil: Gönüllü, Y.. University of Cologne; AlemaniaFil: Ferri, Davide. Paul Scherrer Institut; SuizaFil: Eyssler, Arnim. Swiss Federal Laboratories for Materials Science and Technology; SuizaFil: Otal, Eugenio Hernan. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estratégico para la Defensa. Ministerio de Defensa. Unidad de Investigación y Desarrollo Estratégico para la Defensa; ArgentinaFil: Saruhan, B.. German Aerospace Center; AlemaniaPergamon-Elsevier Science Ltd2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/81838Mondragón Rodríguez, G. C.; Gönüllü, Y.; Ferri, Davide; Eyssler, Arnim; Otal, Eugenio Hernan; et al.; Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments; Pergamon-Elsevier Science Ltd; Materials Research Bulletin; 61; 1-2015; 130-1350025-5408CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0025540814006035info:eu-repo/semantics/altIdentifier/doi/10.1016/j.materresbull.2014.10.007info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:09:33Zoai:ri.conicet.gov.ar:11336/81838instacron: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:34982025-09-03 10:09:33.37CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
title Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
spellingShingle Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
Mondragón Rodríguez, G. C.
Chemical Synthesis
Microstructure
Perovskite
Xafs
title_short Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
title_full Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
title_fullStr Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
title_full_unstemmed Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
title_sort Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments
dc.creator.none.fl_str_mv Mondragón Rodríguez, G. C.
Gönüllü, Y.
Ferri, Davide
Eyssler, Arnim
Otal, Eugenio Hernan
Saruhan, B.
author Mondragón Rodríguez, G. C.
author_facet Mondragón Rodríguez, G. C.
Gönüllü, Y.
Ferri, Davide
Eyssler, Arnim
Otal, Eugenio Hernan
Saruhan, B.
author_role author
author2 Gönüllü, Y.
Ferri, Davide
Eyssler, Arnim
Otal, Eugenio Hernan
Saruhan, B.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Chemical Synthesis
Microstructure
Perovskite
Xafs
topic Chemical Synthesis
Microstructure
Perovskite
Xafs
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Perovskite-type oxides of composition BaTi 0.9 Rh 0.1 O 3±δ were prepared following a new chemical route that avoids the formation of hydroxyl species and precipitation, and allows the homogeneous distribution of Rh in the final mixed metal oxide. The high dispersion of Rh and the formation of the solid solution between Rh and the BaTiO 3 perovskite is confirmed by means of X-ray diffraction (XRD) and extended X-ray absorption fine structure spectroscopy (EXAFS). The presence of Rh stabilized the hexagonal BaTi 0.9 Rh 0.1 O 3±δ phase, which decomposes into barium orthotitanate (BaTi 2 O 4 ) and metallic Rh°in reducing environment. This phase transition starts already at 700°C and is only partially completed at 900°C suggesting that part of the Rh present in the perovskite lattice might not be easily reduced by hydrogen. These aspects and further open questions are discussed.
Fil: Mondragón Rodríguez, G. C.. German Aerospace Center; Alemania
Fil: Gönüllü, Y.. University of Cologne; Alemania
Fil: Ferri, Davide. Paul Scherrer Institut; Suiza
Fil: Eyssler, Arnim. Swiss Federal Laboratories for Materials Science and Technology; Suiza
Fil: Otal, Eugenio Hernan. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estratégico para la Defensa. Ministerio de Defensa. Unidad de Investigación y Desarrollo Estratégico para la Defensa; Argentina
Fil: Saruhan, B.. German Aerospace Center; Alemania
description Perovskite-type oxides of composition BaTi 0.9 Rh 0.1 O 3±δ were prepared following a new chemical route that avoids the formation of hydroxyl species and precipitation, and allows the homogeneous distribution of Rh in the final mixed metal oxide. The high dispersion of Rh and the formation of the solid solution between Rh and the BaTiO 3 perovskite is confirmed by means of X-ray diffraction (XRD) and extended X-ray absorption fine structure spectroscopy (EXAFS). The presence of Rh stabilized the hexagonal BaTi 0.9 Rh 0.1 O 3±δ phase, which decomposes into barium orthotitanate (BaTi 2 O 4 ) and metallic Rh°in reducing environment. This phase transition starts already at 700°C and is only partially completed at 900°C suggesting that part of the Rh present in the perovskite lattice might not be easily reduced by hydrogen. These aspects and further open questions are discussed.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
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/11336/81838
Mondragón Rodríguez, G. C.; Gönüllü, Y.; Ferri, Davide; Eyssler, Arnim; Otal, Eugenio Hernan; et al.; Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments; Pergamon-Elsevier Science Ltd; Materials Research Bulletin; 61; 1-2015; 130-135
0025-5408
CONICET Digital
CONICET
url http://hdl.handle.net/11336/81838
identifier_str_mv Mondragón Rodríguez, G. C.; Gönüllü, Y.; Ferri, Davide; Eyssler, Arnim; Otal, Eugenio Hernan; et al.; Phase transitions of BaTi 0.9 Rh 0.1 O 3±δ perovskite-type oxides under reducing environments; Pergamon-Elsevier Science Ltd; Materials Research Bulletin; 61; 1-2015; 130-135
0025-5408
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://www.sciencedirect.com/science/article/pii/S0025540814006035
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.materresbull.2014.10.007
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 Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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
_version_ 1842270085649006592
score 13.13397

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