Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ
- Autores
- Basbus, Juan Felipe; Caneiro, Alberto; Suescun, Leopoldo; Lamas, Diego Germán; Mogni, Liliana Verónica
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The effect of Pr doping on the crystal structure and site occupancy was studied for the nominally synthesized BaCe1 − xPrxO3 − δ (x = 0, 0.2, 0.4, 0.6 and 0.8) perovskites using anomalous X‐ray powder diffraction (AXRD) data and Rietveld analysis. Crystal structure parameters were accurately determined using 10 000 eV photons, and the Pr occupancy was refined using data collected with 5962 eV photons, close to the Pr LIII absorption edge. BaCe1 − xPrxO3 − δ crystallizes in the Pnma (No. 62) space group for all x values. Pr cations are mainly located at the Ce sites (perovskites B site), but a small fraction of them increasingly substitute some of the Ba ions at the A site as Pr content increases. The Pr doping introduces electronic defects (Pr+3/Pr+4) and oxygen vacancies needed for H2O incorporation and H‐ionic conductivity. A decrease in the orthorhombic distortion would produce the opposite effects on the electronic and ionic mobility. The electronic mobility should increase due to an improvement in the overlap of the (Ce/Pr)4f–O2p orbital, while the proton mobility should decrease as a consequence of a larger hopping distance.
Fil: Basbus, Juan Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
Fil: Suescun, Leopoldo. Universidad de la República; Uruguay
Fil: Lamas, Diego Germán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina
Fil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina - Materia
-
Anomalous Xray Difraction
Synchrotron X-Ray Diffraction
Electronic And Ionic Mobility
Proton Conductor - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/41757
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spelling |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δBasbus, Juan FelipeCaneiro, AlbertoSuescun, LeopoldoLamas, Diego GermánMogni, Liliana VerónicaAnomalous Xray DifractionSynchrotron X-Ray DiffractionElectronic And Ionic MobilityProton ConductorThe effect of Pr doping on the crystal structure and site occupancy was studied for the nominally synthesized BaCe1 − xPrxO3 − δ (x = 0, 0.2, 0.4, 0.6 and 0.8) perovskites using anomalous X‐ray powder diffraction (AXRD) data and Rietveld analysis. Crystal structure parameters were accurately determined using 10 000 eV photons, and the Pr occupancy was refined using data collected with 5962 eV photons, close to the Pr LIII absorption edge. BaCe1 − xPrxO3 − δ crystallizes in the Pnma (No. 62) space group for all x values. Pr cations are mainly located at the Ce sites (perovskites B site), but a small fraction of them increasingly substitute some of the Ba ions at the A site as Pr content increases. The Pr doping introduces electronic defects (Pr+3/Pr+4) and oxygen vacancies needed for H2O incorporation and H‐ionic conductivity. A decrease in the orthorhombic distortion would produce the opposite effects on the electronic and ionic mobility. The electronic mobility should increase due to an improvement in the overlap of the (Ce/Pr)4f–O2p orbital, while the proton mobility should decrease as a consequence of a larger hopping distance.Fil: Basbus, Juan Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Suescun, Leopoldo. Universidad de la República; UruguayFil: Lamas, Diego Germán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; ArgentinaFil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaWiley Blackwell Publishing, Inc2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/41757Basbus, Juan Felipe; Caneiro, Alberto; Suescun, Leopoldo; Lamas, Diego Germán; Mogni, Liliana Verónica; Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ; Wiley Blackwell Publishing, Inc; Acta Crystallographica Section B-Structural Science; 71; 8-2015; 455-4620108-76812052-5206CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1107/S2052520615010203info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1107/S2052520615010203info:eu-repo/semantics/altIdentifier/url/http://scripts.iucr.org/cgi-bin/paper?S2052520615010203info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:49:29Zoai:ri.conicet.gov.ar:11336/41757instacron: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 09:49:29.604CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
title |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
spellingShingle |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ Basbus, Juan Felipe Anomalous Xray Difraction Synchrotron X-Ray Diffraction Electronic And Ionic Mobility Proton Conductor |
title_short |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
title_full |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
title_fullStr |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
title_full_unstemmed |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
title_sort |
Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ |
dc.creator.none.fl_str_mv |
Basbus, Juan Felipe Caneiro, Alberto Suescun, Leopoldo Lamas, Diego Germán Mogni, Liliana Verónica |
author |
Basbus, Juan Felipe |
author_facet |
Basbus, Juan Felipe Caneiro, Alberto Suescun, Leopoldo Lamas, Diego Germán Mogni, Liliana Verónica |
author_role |
author |
author2 |
Caneiro, Alberto Suescun, Leopoldo Lamas, Diego Germán Mogni, Liliana Verónica |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Anomalous Xray Difraction Synchrotron X-Ray Diffraction Electronic And Ionic Mobility Proton Conductor |
topic |
Anomalous Xray Difraction Synchrotron X-Ray Diffraction Electronic And Ionic Mobility Proton Conductor |
dc.description.none.fl_txt_mv |
The effect of Pr doping on the crystal structure and site occupancy was studied for the nominally synthesized BaCe1 − xPrxO3 − δ (x = 0, 0.2, 0.4, 0.6 and 0.8) perovskites using anomalous X‐ray powder diffraction (AXRD) data and Rietveld analysis. Crystal structure parameters were accurately determined using 10 000 eV photons, and the Pr occupancy was refined using data collected with 5962 eV photons, close to the Pr LIII absorption edge. BaCe1 − xPrxO3 − δ crystallizes in the Pnma (No. 62) space group for all x values. Pr cations are mainly located at the Ce sites (perovskites B site), but a small fraction of them increasingly substitute some of the Ba ions at the A site as Pr content increases. The Pr doping introduces electronic defects (Pr+3/Pr+4) and oxygen vacancies needed for H2O incorporation and H‐ionic conductivity. A decrease in the orthorhombic distortion would produce the opposite effects on the electronic and ionic mobility. The electronic mobility should increase due to an improvement in the overlap of the (Ce/Pr)4f–O2p orbital, while the proton mobility should decrease as a consequence of a larger hopping distance. Fil: Basbus, Juan Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina Fil: Suescun, Leopoldo. Universidad de la República; Uruguay Fil: Lamas, Diego Germán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina Fil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina |
description |
The effect of Pr doping on the crystal structure and site occupancy was studied for the nominally synthesized BaCe1 − xPrxO3 − δ (x = 0, 0.2, 0.4, 0.6 and 0.8) perovskites using anomalous X‐ray powder diffraction (AXRD) data and Rietveld analysis. Crystal structure parameters were accurately determined using 10 000 eV photons, and the Pr occupancy was refined using data collected with 5962 eV photons, close to the Pr LIII absorption edge. BaCe1 − xPrxO3 − δ crystallizes in the Pnma (No. 62) space group for all x values. Pr cations are mainly located at the Ce sites (perovskites B site), but a small fraction of them increasingly substitute some of the Ba ions at the A site as Pr content increases. The Pr doping introduces electronic defects (Pr+3/Pr+4) and oxygen vacancies needed for H2O incorporation and H‐ionic conductivity. A decrease in the orthorhombic distortion would produce the opposite effects on the electronic and ionic mobility. The electronic mobility should increase due to an improvement in the overlap of the (Ce/Pr)4f–O2p orbital, while the proton mobility should decrease as a consequence of a larger hopping distance. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08 |
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/11336/41757 Basbus, Juan Felipe; Caneiro, Alberto; Suescun, Leopoldo; Lamas, Diego Germán; Mogni, Liliana Verónica; Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ; Wiley Blackwell Publishing, Inc; Acta Crystallographica Section B-Structural Science; 71; 8-2015; 455-462 0108-7681 2052-5206 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/41757 |
identifier_str_mv |
Basbus, Juan Felipe; Caneiro, Alberto; Suescun, Leopoldo; Lamas, Diego Germán; Mogni, Liliana Verónica; Anomalous X-ray diffraction study of Pr-substituted BaCeO3 − δ; Wiley Blackwell Publishing, Inc; Acta Crystallographica Section B-Structural Science; 71; 8-2015; 455-462 0108-7681 2052-5206 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1107/S2052520615010203 info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1107/S2052520615010203 info:eu-repo/semantics/altIdentifier/url/http://scripts.iucr.org/cgi-bin/paper?S2052520615010203 |
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 |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
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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1844613531278770176 |
score |
13.070432 |