Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)

Detalhes bibliográficos
Autor(a) principal: Vyshatko, N.P.
Data de Publicação: 2003
Outros Autores: Kharton, V., Shaula, A.L., Naumovich, E.N., Marques, F.M.B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/21983
Resumo: Comparative analysis of the structure refinement results of perovskite-like LaGa0.5M0.5O3-δ (M = Mn, Fe, Co, Ni) and data on other LaGaO3-based phases, heavily doped with transition metal cations, shows that on doping the structural changes in these oxides follow common trends for the perovskite-type systems. The maximum ionic conductivity, observed in various perovskites when the tolerance factor values are approximately 0.96-0.97, was found to correlate with the transition from orthorhombic to rhombohedral structure and maximum lattice distortion. The perovskite unit cell distortion near the orthorhombic-rhombohedral phase boundary may hence play a positive role in the ionic transport processes. © 2002 Elsevier Science Ltd. All rights reserved.
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spelling Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)Crystal structureIonic conductivityOxidesX-ray diffractionApproximation theoryCrystal structureDoping (additives)Ionic conductionPositive ionsTransition metalsX ray diffractionStructural characterizationPerovskiteComparative analysis of the structure refinement results of perovskite-like LaGa0.5M0.5O3-δ (M = Mn, Fe, Co, Ni) and data on other LaGaO3-based phases, heavily doped with transition metal cations, shows that on doping the structural changes in these oxides follow common trends for the perovskite-type systems. The maximum ionic conductivity, observed in various perovskites when the tolerance factor values are approximately 0.96-0.97, was found to correlate with the transition from orthorhombic to rhombohedral structure and maximum lattice distortion. The perovskite unit cell distortion near the orthorhombic-rhombohedral phase boundary may hence play a positive role in the ionic transport processes. © 2002 Elsevier Science Ltd. All rights reserved.Elsevier2018-01-31T18:49:57Z2003-01-01T00:00:00Z2003-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/21983eng0025-540810.1016/S0025-5408(02)01050-4Vyshatko, N.P.Kharton, V.Shaula, A.L.Naumovich, E.N.Marques, F.M.B.info: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:RCAAP2024-02-22T11:42:57Zoai:ria.ua.pt:10773/21983Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:56:12.750975Repositório 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 Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
title Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
spellingShingle Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
Vyshatko, N.P.
Crystal structure
Ionic conductivity
Oxides
X-ray diffraction
Approximation theory
Crystal structure
Doping (additives)
Ionic conduction
Positive ions
Transition metals
X ray diffraction
Structural characterization
Perovskite
title_short Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
title_full Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
title_fullStr Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
title_full_unstemmed Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
title_sort Structural characterization of mixed conducting perovskites La(Ga,M)O3-δ ( M = Mn, Fe, Co, Ni)
author Vyshatko, N.P.
author_facet Vyshatko, N.P.
Kharton, V.
Shaula, A.L.
Naumovich, E.N.
Marques, F.M.B.
author_role author
author2 Kharton, V.
Shaula, A.L.
Naumovich, E.N.
Marques, F.M.B.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Vyshatko, N.P.
Kharton, V.
Shaula, A.L.
Naumovich, E.N.
Marques, F.M.B.
dc.subject.por.fl_str_mv Crystal structure
Ionic conductivity
Oxides
X-ray diffraction
Approximation theory
Crystal structure
Doping (additives)
Ionic conduction
Positive ions
Transition metals
X ray diffraction
Structural characterization
Perovskite
topic Crystal structure
Ionic conductivity
Oxides
X-ray diffraction
Approximation theory
Crystal structure
Doping (additives)
Ionic conduction
Positive ions
Transition metals
X ray diffraction
Structural characterization
Perovskite
description Comparative analysis of the structure refinement results of perovskite-like LaGa0.5M0.5O3-δ (M = Mn, Fe, Co, Ni) and data on other LaGaO3-based phases, heavily doped with transition metal cations, shows that on doping the structural changes in these oxides follow common trends for the perovskite-type systems. The maximum ionic conductivity, observed in various perovskites when the tolerance factor values are approximately 0.96-0.97, was found to correlate with the transition from orthorhombic to rhombohedral structure and maximum lattice distortion. The perovskite unit cell distortion near the orthorhombic-rhombohedral phase boundary may hence play a positive role in the ionic transport processes. © 2002 Elsevier Science Ltd. All rights reserved.
publishDate 2003
dc.date.none.fl_str_mv 2003-01-01T00:00:00Z
2003-01
2018-01-31T18:49:57Z
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/10773/21983
url http://hdl.handle.net/10773/21983
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0025-5408
10.1016/S0025-5408(02)01050-4
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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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
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