XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia

The local order around Zr and Y atoms of nanocrystalline yttria-stabilized zirconia (YSZ) powders with different grain sizes has been investigated by x-ray absorption spectroscopies. The samples were prepared by means of mechanical alloying with or without subsequent sintering treatment and also by...

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Autores: Durá, O. J., Boada, R., López de la Torre, M.A., Aquilanti, G., Rivera Calzada, Alberto Carlos, León Yebra, Carlos, Chaboy, J.
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/33322
Acceso en línea:https://hdl.handle.net/20.500.14352/33322
Access Level:acceso abierto
Palabra clave:548:620.1
Nanocrystalline
Física del estado sólido
2211 Física del Estado Sólido
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spelling XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconiaDurá, O. J.Boada, R.López de la Torre, M.A.Aquilanti, G.Rivera Calzada, Alberto CarlosLeón Yebra, CarlosChaboy, J.548:620.1NanocrystallineFísica del estado sólido2211 Física del Estado SólidoThe local order around Zr and Y atoms of nanocrystalline yttria-stabilized zirconia (YSZ) powders with different grain sizes has been investigated by x-ray absorption spectroscopies. The samples were prepared by means of mechanical alloying with or without subsequent sintering treatment and also by milling commercial YSZ. Our study is motivated by the interest in the electrical properties of grain boundaries and the controversy about the level of disorder in the intergrain regions in nanocrystalline YSZ. The x-ray absorption near edge structure (XANES) analysis indicates that the local order of all the sintered samples is independent of the grain size. This is confirmed by the analysis of the extended x-ray absorption fine structure, which points out also that, in contrast to that found in sintered samples, the local order around the cation in the samples milled without further sintering treatment extends only to the first coordination shell. Finally, the results of ab initio Zr K-edge XANES calculations lead us to conclude that the observed changes of the shape of the white line are not related to a phase transformation but reflects the short-range order present in the as-milled samples.American Physical SocietyUniversidad Complutense de Madrid20132013-01-0120132013-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/33322reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/333222026-06-02T12:44:21Z
dc.title.none.fl_str_mv XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
title XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
spellingShingle XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
Durá, O. J.
548:620.1
Nanocrystalline
Física del estado sólido
2211 Física del Estado Sólido
title_short XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
title_full XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
title_fullStr XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
title_full_unstemmed XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
title_sort XANES and EXAFS study of the local order in nanocrystalline yttria-stabilized zirconia
dc.creator.none.fl_str_mv Durá, O. J.
Boada, R.
López de la Torre, M.A.
Aquilanti, G.
Rivera Calzada, Alberto Carlos
León Yebra, Carlos
Chaboy, J.
author Durá, O. J.
author_facet Durá, O. J.
Boada, R.
López de la Torre, M.A.
Aquilanti, G.
Rivera Calzada, Alberto Carlos
León Yebra, Carlos
Chaboy, J.
author_role author
author2 Boada, R.
López de la Torre, M.A.
Aquilanti, G.
Rivera Calzada, Alberto Carlos
León Yebra, Carlos
Chaboy, J.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 548:620.1
Nanocrystalline
Física del estado sólido
2211 Física del Estado Sólido
topic 548:620.1
Nanocrystalline
Física del estado sólido
2211 Física del Estado Sólido
description The local order around Zr and Y atoms of nanocrystalline yttria-stabilized zirconia (YSZ) powders with different grain sizes has been investigated by x-ray absorption spectroscopies. The samples were prepared by means of mechanical alloying with or without subsequent sintering treatment and also by milling commercial YSZ. Our study is motivated by the interest in the electrical properties of grain boundaries and the controversy about the level of disorder in the intergrain regions in nanocrystalline YSZ. The x-ray absorption near edge structure (XANES) analysis indicates that the local order of all the sintered samples is independent of the grain size. This is confirmed by the analysis of the extended x-ray absorption fine structure, which points out also that, in contrast to that found in sintered samples, the local order around the cation in the samples milled without further sintering treatment extends only to the first coordination shell. Finally, the results of ab initio Zr K-edge XANES calculations lead us to conclude that the observed changes of the shape of the white line are not related to a phase transformation but reflects the short-range order present in the as-milled samples.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01
2013
2013-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/33322
url https://hdl.handle.net/20.500.14352/33322
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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