Dielectric properties of Al-Nb amorphous mixed oxides

Detalhes bibliográficos
Autor(a) principal: Di Franco, F.
Data de Publicação: 2013
Outros Autores: Santamaria, M., Di Quarto, F., La Mantia, F., de Sá, A.I., Rangel, C. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/2210
Resumo: An impedance study of amorphous thin oxide films grown on sputtered Al-Nb alloys is presented. The characterization of the electronic properties of mixed amorphous oxide on the basis of the theory of amorphous semiconductor Schottky barrier has been carried out for anodic film on Al-92at.%Nb in a very detailed manner. The semiconductor to insulator transition of formed oxides as a function of the alloy composition at fixed final voltage has been supported by differential admittance study. A possible rationale for this transition has been suggested taking into account the changes of solid state properties, optical bandgap and electronic structure of the films, derived from the fitting of the differential admittance curves at different frequencies.
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spelling Dielectric properties of Al-Nb amorphous mixed oxidesDielectric PropertiesAluminiumMixed OxidesAn impedance study of amorphous thin oxide films grown on sputtered Al-Nb alloys is presented. The characterization of the electronic properties of mixed amorphous oxide on the basis of the theory of amorphous semiconductor Schottky barrier has been carried out for anodic film on Al-92at.%Nb in a very detailed manner. The semiconductor to insulator transition of formed oxides as a function of the alloy composition at fixed final voltage has been supported by differential admittance study. A possible rationale for this transition has been suggested taking into account the changes of solid state properties, optical bandgap and electronic structure of the films, derived from the fitting of the differential admittance curves at different frequencies.The Electrochemical SocietyRepositório do LNEGDi Franco, F.Santamaria, M.Di Quarto, F.La Mantia, F.de Sá, A.I.Rangel, C. M.2014-02-25T11:54:01Z2013-01-01T00:00:00Z2013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2210engDi Franco, F.; Santamaria, M.; Di Quarto, F.; La Mantia, F.; Sá, A.I. de; Rangel, C.M. Dielectric properties of Al-Nb amorphous mixed oxides. In: ECS Journal of Solid State Science and Technology, 2013, Vol. 2, nº 11, p. N205-N2102162-8769info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T12:27:04Zoai:repositorio.lneg.pt:10400.9/2210Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:35:05.674965Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Dielectric properties of Al-Nb amorphous mixed oxides
title Dielectric properties of Al-Nb amorphous mixed oxides
spellingShingle Dielectric properties of Al-Nb amorphous mixed oxides
Di Franco, F.
Dielectric Properties
Aluminium
Mixed Oxides
title_short Dielectric properties of Al-Nb amorphous mixed oxides
title_full Dielectric properties of Al-Nb amorphous mixed oxides
title_fullStr Dielectric properties of Al-Nb amorphous mixed oxides
title_full_unstemmed Dielectric properties of Al-Nb amorphous mixed oxides
title_sort Dielectric properties of Al-Nb amorphous mixed oxides
author Di Franco, F.
author_facet Di Franco, F.
Santamaria, M.
Di Quarto, F.
La Mantia, F.
de Sá, A.I.
Rangel, C. M.
author_role author
author2 Santamaria, M.
Di Quarto, F.
La Mantia, F.
de Sá, A.I.
Rangel, C. M.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Di Franco, F.
Santamaria, M.
Di Quarto, F.
La Mantia, F.
de Sá, A.I.
Rangel, C. M.
dc.subject.por.fl_str_mv Dielectric Properties
Aluminium
Mixed Oxides
topic Dielectric Properties
Aluminium
Mixed Oxides
description An impedance study of amorphous thin oxide films grown on sputtered Al-Nb alloys is presented. The characterization of the electronic properties of mixed amorphous oxide on the basis of the theory of amorphous semiconductor Schottky barrier has been carried out for anodic film on Al-92at.%Nb in a very detailed manner. The semiconductor to insulator transition of formed oxides as a function of the alloy composition at fixed final voltage has been supported by differential admittance study. A possible rationale for this transition has been suggested taking into account the changes of solid state properties, optical bandgap and electronic structure of the films, derived from the fitting of the differential admittance curves at different frequencies.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01T00:00:00Z
2013-01-01T00:00:00Z
2014-02-25T11:54:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.9/2210
url http://hdl.handle.net/10400.9/2210
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Di Franco, F.; Santamaria, M.; Di Quarto, F.; La Mantia, F.; Sá, A.I. de; Rangel, C.M. Dielectric properties of Al-Nb amorphous mixed oxides. In: ECS Journal of Solid State Science and Technology, 2013, Vol. 2, nº 11, p. N205-N210
2162-8769
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The Electrochemical Society
publisher.none.fl_str_mv The Electrochemical Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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