Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides
- Autores
- Acuña, Leandro Marcelo; Fuentes, Rodolfo Oscar; Fantini, Marcia C. A.; Lamas, Diego Germán
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In the present work, the local order of Zr in ZrO2–CeO2 nanopowders (with 50, 65, 70, and 90 mol % CeO2) was studied by extended X-ray absorption fine structure around the Zr K-edge. In the cases of ZrO2–50 and 65 mol % CeO2, we studied how the local order is affected by the phase transition at high temperature. In order to study the tetragonal-cubic phase transition as a function of temperature, high-temperature synchrotron radiation X-ray powder diffraction (SR-XPD) was employed. We explored different models of the local atomic structure and interpreted them as distortions of the accepted long-range order deduced by XPD analyses. The results suggested the existence of distortions in the oxygen sublattice, which can be accounted for as displacements of the oxygen atoms along the (110) direction of the pseudofluorite unit cell that cannot be observed by XPD because of the random nature of these displacements.
Fil: Acuña, Leandro Marcelo. 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. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina
Fil: Fuentes, Rodolfo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Departamento de Física; Argentina
Fil: Fantini, Marcia C. A.. Universidade de Sao Paulo; Brasil
Fil: Lamas, Diego Germán. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Nanopowders
It-Sofc
Xrd
Zirconia-Ceria - 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:11336/31849
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Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed OxidesAcuña, Leandro MarceloFuentes, Rodolfo OscarFantini, Marcia C. A.Lamas, Diego GermánNanopowdersIt-SofcXrdZirconia-Ceriahttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2In the present work, the local order of Zr in ZrO2–CeO2 nanopowders (with 50, 65, 70, and 90 mol % CeO2) was studied by extended X-ray absorption fine structure around the Zr K-edge. In the cases of ZrO2–50 and 65 mol % CeO2, we studied how the local order is affected by the phase transition at high temperature. In order to study the tetragonal-cubic phase transition as a function of temperature, high-temperature synchrotron radiation X-ray powder diffraction (SR-XPD) was employed. We explored different models of the local atomic structure and interpreted them as distortions of the accepted long-range order deduced by XPD analyses. The results suggested the existence of distortions in the oxygen sublattice, which can be accounted for as displacements of the oxygen atoms along the (110) direction of the pseudofluorite unit cell that cannot be observed by XPD because of the random nature of these displacements.Fil: Acuña, Leandro Marcelo. 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. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; ArgentinaFil: Fuentes, Rodolfo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Departamento de Física; ArgentinaFil: Fantini, Marcia C. A.. Universidade de Sao Paulo; BrasilFil: Lamas, Diego Germán. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Chemical Society2014-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31849Lamas, Diego Germán; Fantini, Marcia C. A.; Fuentes, Rodolfo Oscar; Acuña, Leandro Marcelo; Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides; American Chemical Society; Journal of Physical Chemistry C; 118; 21; 5-2014; 11445-114531932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp502457winfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp502457winfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:03Zoai:ri.conicet.gov.ar:11336/31849instacron: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 09:34:03.469CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
title |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
spellingShingle |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides Acuña, Leandro Marcelo Nanopowders It-Sofc Xrd Zirconia-Ceria |
title_short |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
title_full |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
title_fullStr |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
title_full_unstemmed |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
title_sort |
Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides |
dc.creator.none.fl_str_mv |
Acuña, Leandro Marcelo Fuentes, Rodolfo Oscar Fantini, Marcia C. A. Lamas, Diego Germán |
author |
Acuña, Leandro Marcelo |
author_facet |
Acuña, Leandro Marcelo Fuentes, Rodolfo Oscar Fantini, Marcia C. A. Lamas, Diego Germán |
author_role |
author |
author2 |
Fuentes, Rodolfo Oscar Fantini, Marcia C. A. Lamas, Diego Germán |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Nanopowders It-Sofc Xrd Zirconia-Ceria |
topic |
Nanopowders It-Sofc Xrd Zirconia-Ceria |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
In the present work, the local order of Zr in ZrO2–CeO2 nanopowders (with 50, 65, 70, and 90 mol % CeO2) was studied by extended X-ray absorption fine structure around the Zr K-edge. In the cases of ZrO2–50 and 65 mol % CeO2, we studied how the local order is affected by the phase transition at high temperature. In order to study the tetragonal-cubic phase transition as a function of temperature, high-temperature synchrotron radiation X-ray powder diffraction (SR-XPD) was employed. We explored different models of the local atomic structure and interpreted them as distortions of the accepted long-range order deduced by XPD analyses. The results suggested the existence of distortions in the oxygen sublattice, which can be accounted for as displacements of the oxygen atoms along the (110) direction of the pseudofluorite unit cell that cannot be observed by XPD because of the random nature of these displacements. Fil: Acuña, Leandro Marcelo. 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. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina Fil: Fuentes, Rodolfo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Departamento de Física; Argentina Fil: Fantini, Marcia C. A.. Universidade de Sao Paulo; Brasil Fil: Lamas, Diego Germán. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
In the present work, the local order of Zr in ZrO2–CeO2 nanopowders (with 50, 65, 70, and 90 mol % CeO2) was studied by extended X-ray absorption fine structure around the Zr K-edge. In the cases of ZrO2–50 and 65 mol % CeO2, we studied how the local order is affected by the phase transition at high temperature. In order to study the tetragonal-cubic phase transition as a function of temperature, high-temperature synchrotron radiation X-ray powder diffraction (SR-XPD) was employed. We explored different models of the local atomic structure and interpreted them as distortions of the accepted long-range order deduced by XPD analyses. The results suggested the existence of distortions in the oxygen sublattice, which can be accounted for as displacements of the oxygen atoms along the (110) direction of the pseudofluorite unit cell that cannot be observed by XPD because of the random nature of these displacements. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-05 |
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/11336/31849 Lamas, Diego Germán; Fantini, Marcia C. A.; Fuentes, Rodolfo Oscar; Acuña, Leandro Marcelo; Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides; American Chemical Society; Journal of Physical Chemistry C; 118; 21; 5-2014; 11445-11453 1932-7447 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/31849 |
identifier_str_mv |
Lamas, Diego Germán; Fantini, Marcia C. A.; Fuentes, Rodolfo Oscar; Acuña, Leandro Marcelo; Relation between Distortions in the Oxygen Sublattice and the Local Order of Zr in Nanostructured ZrO2–CeO2 Mixed Oxides; American Chemical Society; Journal of Physical Chemistry C; 118; 21; 5-2014; 11445-11453 1932-7447 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp502457w info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp502457w |
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 |
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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1844613051402158080 |
score |
13.070432 |