Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation

This research has been conducted to characterize and validate resistive heating as a synthesis method for zirconium oxides (ZrO_(2)). A wire of Zr has been oxidized to form a core-shell structure, in which the core is a metal wire, and the shell is an oxide layer that is around 10 mu m thick. The ch...

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Detalles Bibliográficos
Autores: Ramos Justicia, Juan Francisco, Ballester Andújar, José Luis, Urbieta Quiroga, Ana Irene, Fernández Sánchez, Paloma
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/73343
Acceso en línea:https://hdl.handle.net/20.500.14352/73343
Access Level:acceso abierto
Palabra clave:538.9
ZrO_(2) nanoparticles
Raman-spectra
Zirconia
Luminescence
Oxide
Photoluminescence
Transition metal oxides
Defects
Fast growth
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/73343
network_acronym_str ES
network_name_str España
repository_id_str
spelling Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidationRamos Justicia, Juan FranciscoBallester Andújar, José LuisUrbieta Quiroga, Ana IreneFernández Sánchez, Paloma538.9ZrO_(2) nanoparticlesRaman-spectraZirconiaLuminescenceOxidePhotoluminescenceTransition metal oxidesDefectsFast growthFísica de materialesFísica del estado sólido2211 Física del Estado SólidoThis research has been conducted to characterize and validate resistive heating as a synthesis method for zirconium oxides (ZrO_(2)). A wire of Zr has been oxidized to form a core-shell structure, in which the core is a metal wire, and the shell is an oxide layer that is around 10 mu m thick. The characterization of the samples has been performed by means of several techniques based on Scanning Electron Microscopy (SEM). The topography images show that thermal gradient appears to have little influence on morphology, unlike time, which plays an important role. The chemical composition was analyzed by X-ray spectroscopy (EDX) and X-ray diffraction (XRD), and Raman spectroscopy has been used to assess crystallinity and crystal structure. The oxide layer is mainly formed by monoclinic ZrO_(2), alongside other, less significant, phases. Photoluminescence (PL) and cathodoluminescence (CL) measurements have allowed us to study the distribution of defects along the shell and to confirm the degree of uniformity. The oxygen vacancies, either as isolated defects or forming complexes with impurities, play a determinant role in the luminescent processes. Color centers, mainly electron centers such as F, F-A and F-AA, give rise to several visible emissions extending from blue to green, with main components at around 2 eV, 2.4-2.5 eV and 2.7 eV. The differences between PL and CL in relation to distinct recombination paths are also discussed.MDPIUniversidad Complutense de Madrid20232023-03-1420232023-03-14journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/73343reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/733432026-06-02T12:44:21Z
dc.title.none.fl_str_mv Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
title Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
spellingShingle Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
Ramos Justicia, Juan Francisco
538.9
ZrO_(2) nanoparticles
Raman-spectra
Zirconia
Luminescence
Oxide
Photoluminescence
Transition metal oxides
Defects
Fast growth
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
title_full Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
title_fullStr Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
title_full_unstemmed Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
title_sort Growth of Zr/ZrO_(2) core-shell structures by fast thermal oxidation
dc.creator.none.fl_str_mv Ramos Justicia, Juan Francisco
Ballester Andújar, José Luis
Urbieta Quiroga, Ana Irene
Fernández Sánchez, Paloma
author Ramos Justicia, Juan Francisco
author_facet Ramos Justicia, Juan Francisco
Ballester Andújar, José Luis
Urbieta Quiroga, Ana Irene
Fernández Sánchez, Paloma
author_role author
author2 Ballester Andújar, José Luis
Urbieta Quiroga, Ana Irene
Fernández Sánchez, Paloma
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
ZrO_(2) nanoparticles
Raman-spectra
Zirconia
Luminescence
Oxide
Photoluminescence
Transition metal oxides
Defects
Fast growth
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
ZrO_(2) nanoparticles
Raman-spectra
Zirconia
Luminescence
Oxide
Photoluminescence
Transition metal oxides
Defects
Fast growth
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description This research has been conducted to characterize and validate resistive heating as a synthesis method for zirconium oxides (ZrO_(2)). A wire of Zr has been oxidized to form a core-shell structure, in which the core is a metal wire, and the shell is an oxide layer that is around 10 mu m thick. The characterization of the samples has been performed by means of several techniques based on Scanning Electron Microscopy (SEM). The topography images show that thermal gradient appears to have little influence on morphology, unlike time, which plays an important role. The chemical composition was analyzed by X-ray spectroscopy (EDX) and X-ray diffraction (XRD), and Raman spectroscopy has been used to assess crystallinity and crystal structure. The oxide layer is mainly formed by monoclinic ZrO_(2), alongside other, less significant, phases. Photoluminescence (PL) and cathodoluminescence (CL) measurements have allowed us to study the distribution of defects along the shell and to confirm the degree of uniformity. The oxygen vacancies, either as isolated defects or forming complexes with impurities, play a determinant role in the luminescent processes. Color centers, mainly electron centers such as F, F-A and F-AA, give rise to several visible emissions extending from blue to green, with main components at around 2 eV, 2.4-2.5 eV and 2.7 eV. The differences between PL and CL in relation to distinct recombination paths are also discussed.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-03-14
2023
2023-03-14
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/20.500.14352/73343
url https://hdl.handle.net/20.500.14352/73343
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
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
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
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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 15,298079

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