Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions

Autores
Abdala, Paula Macarena; Craievich, Aldo F.; Lamas, Diego German
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The dependences of phase stability and solid state phase transitions on the crystallite size in ZrO2-10, 12 and 14 mol% Sc2O3 nanopowders are investigated by X-ray powder diffraction using a synchrotron source (S-XPD). The average crystallite sizes lie within the range of 35 to 100 nm, approximately. At room temperature these solid solutions were previously characterised as mixtures of a cubic phase and one or two rhombohedral phases, β and γ, with their fractions depending on composition and average crystallite sizes. In this study, it is shown that at high temperatures these solid solutions become cubic single-phased. The size-dependent temperatures of the transitions from the rhombohedral phases to the cubic phase at high temperature are determined through the analyses of a number of S-XPD patterns. These transitions were studied on cooling and on heating, exhibiting hysteresis effects whose relevant features are size and composition dependent.
Fil: Abdala, Paula Macarena. No especifíca;
Fil: Craievich, Aldo F.. Universidade de Sao Paulo; Brasil
Fil: Lamas, Diego German. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
Nanomaterials
ZrO2-Sc2O3 phase diagram
Synchrotron X-ray powder diffraction
Metastable phases
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:11336/269547
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Size-dependent phase transitions in nanostructured zirconia–scandia solid solutionsAbdala, Paula MacarenaCraievich, Aldo F.Lamas, Diego GermanNanomaterialsZrO2-Sc2O3 phase diagramSynchrotron X-ray powder diffractionMetastable phaseshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2The dependences of phase stability and solid state phase transitions on the crystallite size in ZrO2-10, 12 and 14 mol% Sc2O3 nanopowders are investigated by X-ray powder diffraction using a synchrotron source (S-XPD). The average crystallite sizes lie within the range of 35 to 100 nm, approximately. At room temperature these solid solutions were previously characterised as mixtures of a cubic phase and one or two rhombohedral phases, β and γ, with their fractions depending on composition and average crystallite sizes. In this study, it is shown that at high temperatures these solid solutions become cubic single-phased. The size-dependent temperatures of the transitions from the rhombohedral phases to the cubic phase at high temperature are determined through the analyses of a number of S-XPD patterns. These transitions were studied on cooling and on heating, exhibiting hysteresis effects whose relevant features are size and composition dependent.Fil: Abdala, Paula Macarena. No especifíca;Fil: Craievich, Aldo F.. Universidade de Sao Paulo; BrasilFil: Lamas, Diego German. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaRoyal Society of Chemistry2012-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/269547Abdala, Paula Macarena; Craievich, Aldo F.; Lamas, Diego German; Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions; Royal Society of Chemistry; RSC Advances; 2; 12; 3-2012; 1-92046-2069CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2012/ra/c2ra20512binfo:eu-repo/semantics/altIdentifier/doi/10.1039/C2RA20512Binfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-29T11:46:59Zoai:ri.conicet.gov.ar:11336/269547instacron: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:34982025-10-29 11:46:59.421CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
title Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
spellingShingle Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
Abdala, Paula Macarena
Nanomaterials
ZrO2-Sc2O3 phase diagram
Synchrotron X-ray powder diffraction
Metastable phases
title_short Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
title_full Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
title_fullStr Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
title_full_unstemmed Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
title_sort Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions
dc.creator.none.fl_str_mv Abdala, Paula Macarena
Craievich, Aldo F.
Lamas, Diego German
author Abdala, Paula Macarena
author_facet Abdala, Paula Macarena
Craievich, Aldo F.
Lamas, Diego German
author_role author
author2 Craievich, Aldo F.
Lamas, Diego German
author2_role author
author
dc.subject.none.fl_str_mv Nanomaterials
ZrO2-Sc2O3 phase diagram
Synchrotron X-ray powder diffraction
Metastable phases
topic Nanomaterials
ZrO2-Sc2O3 phase diagram
Synchrotron X-ray powder diffraction
Metastable phases
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The dependences of phase stability and solid state phase transitions on the crystallite size in ZrO2-10, 12 and 14 mol% Sc2O3 nanopowders are investigated by X-ray powder diffraction using a synchrotron source (S-XPD). The average crystallite sizes lie within the range of 35 to 100 nm, approximately. At room temperature these solid solutions were previously characterised as mixtures of a cubic phase and one or two rhombohedral phases, β and γ, with their fractions depending on composition and average crystallite sizes. In this study, it is shown that at high temperatures these solid solutions become cubic single-phased. The size-dependent temperatures of the transitions from the rhombohedral phases to the cubic phase at high temperature are determined through the analyses of a number of S-XPD patterns. These transitions were studied on cooling and on heating, exhibiting hysteresis effects whose relevant features are size and composition dependent.
Fil: Abdala, Paula Macarena. No especifíca;
Fil: Craievich, Aldo F.. Universidade de Sao Paulo; Brasil
Fil: Lamas, Diego German. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description The dependences of phase stability and solid state phase transitions on the crystallite size in ZrO2-10, 12 and 14 mol% Sc2O3 nanopowders are investigated by X-ray powder diffraction using a synchrotron source (S-XPD). The average crystallite sizes lie within the range of 35 to 100 nm, approximately. At room temperature these solid solutions were previously characterised as mixtures of a cubic phase and one or two rhombohedral phases, β and γ, with their fractions depending on composition and average crystallite sizes. In this study, it is shown that at high temperatures these solid solutions become cubic single-phased. The size-dependent temperatures of the transitions from the rhombohedral phases to the cubic phase at high temperature are determined through the analyses of a number of S-XPD patterns. These transitions were studied on cooling and on heating, exhibiting hysteresis effects whose relevant features are size and composition dependent.
publishDate 2012
dc.date.none.fl_str_mv 2012-03
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/11336/269547
Abdala, Paula Macarena; Craievich, Aldo F.; Lamas, Diego German; Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions; Royal Society of Chemistry; RSC Advances; 2; 12; 3-2012; 1-9
2046-2069
CONICET Digital
CONICET
url http://hdl.handle.net/11336/269547
identifier_str_mv Abdala, Paula Macarena; Craievich, Aldo F.; Lamas, Diego German; Size-dependent phase transitions in nanostructured zirconia–scandia solid solutions; Royal Society of Chemistry; RSC Advances; 2; 12; 3-2012; 1-9
2046-2069
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.rsc.org/en/content/articlelanding/2012/ra/c2ra20512b
info:eu-repo/semantics/altIdentifier/doi/10.1039/C2RA20512B
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 Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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 13.10058

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