Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders

The thermal decomposition of several metal organic precursors, used in the preparation of YBa2Cu3O7−x superconducting coated conductors (Cu acetate, Cu, Y and Ba trifluoroacetates and Ce propionate) is analyzed by means of several thermoanalytical techniques (TG/DTA, MS and DSC). In all cases, the m...

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Autores: Roura Grabulosa, Pere, Farjas Silva, Jordi, Eloussifi, Hichem, Carreras Blasco, Laura, Ricart, Susagna, Puig Molina, Teresa, Obradors, Xavier
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/10586
Acceso en línea:http://hdl.handle.net/10256/10586
Access Level:acceso abierto
Palabra clave:Piròlisi
Descomposició (Química)
Pyrolysis
Decomposition (Chemistry)
Anàlisi tèrmica
Thermal analysis
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spelling Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powdersRoura Grabulosa, PereFarjas Silva, JordiEloussifi, HichemCarreras Blasco, LauraRicart, SusagnaPuig Molina, TeresaObradors, XavierPiròlisiDescomposició (Química)PyrolysisDecomposition (Chemistry)Anàlisi tèrmicaThermal analysisThe thermal decomposition of several metal organic precursors, used in the preparation of YBa2Cu3O7−x superconducting coated conductors (Cu acetate, Cu, Y and Ba trifluoroacetates and Ce propionate) is analyzed by means of several thermoanalytical techniques (TG/DTA, MS and DSC). In all cases, the metal organic precursors deposited as thin films decompose differently than powders from the same precursors. In thin films, decomposition is facilitated by the easier transport of reactive gas from the surrounding atmosphere and by the easier out-diffusion of volatile products. Consequently, films decompose at lower temperature and are more sensitive to the presence of any residual reactive gas in the furnace. Good thermal contact with the substrate is also shown to minimize overheating in films and avoid combustion processes that are otherwise often observed during the thermal decomposition of powders. Finally, the formation and stability of intermediate products towards the oxide formation, such as metal fluorides, differs in films because of the easier gas exchange. With respect to powders, these compounds are much less stable in films, where their decomposition temperature can be lowered by several hundreds of degrees Celsius. While in some cases the behaviour of films can be predicted by analyzing varying masses of precursor powders, this is not always the case. Therefore, thermal analysis carried out on films is recommended to avoid erroneous conclusions about materials preparation drawn from powdersWe acknowledge the financial support from MICINN (MAT2011-28874-C02-01 and -02, Consolider Project NANOSELECT: CSD2007-00041), EU project EUROTAPES, (EUFP7 NMPLA2012280432) and by the Generalitat de Catalunya (Pla de Recerca 2009SGR-185, 2009-SGR-770 and XaRMAE). H. Eloussifi acknowledges financial support from the Tunisian Ministry of Higher Education and Scientific ResearchElsevierMinisterio de Ciencia e Innovación (Espanya)Generalitat de Catalunya. Agència de Gestió d'Ajuts Universitaris i de Recerca2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion8 p.application/pdfhttp://hdl.handle.net/10256/10586http://hdl.handle.net/10256/10586© Thermochimica Acta, 2015, vol. 601, núm. 10, p. 1-8Articles publicats (D-F)Roura Grabulosa, Pere Farjas Silva, Jordi Eloussifi, Hichem Carreras Blasco, Laura Ricart, Susagna Puig, Teresa Obradors, Xavier 2015 Thermal analysis of metal organic precursors for functional oxide preparation: Thin films versus powders Thermochimica Acta 601 10 1 8reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2014.12.016info:eu-repo/semantics/altIdentifier/issn/0040-6031info:eu-repo/grantAgreement/MICINN//MAT2011-28874-C02-02AGAUR/2009-2013/2009 SGR-185Tots els drets reservatsinfo:eu-repo/semantics/openAccessoai:recercat.cat:10256/105862026-05-29T05:05:01Z
dc.title.none.fl_str_mv Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
title Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
spellingShingle Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
Roura Grabulosa, Pere
Piròlisi
Descomposició (Química)
Pyrolysis
Decomposition (Chemistry)
Anàlisi tèrmica
Thermal analysis
title_short Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
title_full Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
title_fullStr Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
title_full_unstemmed Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
title_sort Thermal analysis of metal organic precursors for functional oxide preparation: thin films versus powders
dc.creator.none.fl_str_mv Roura Grabulosa, Pere
Farjas Silva, Jordi
Eloussifi, Hichem
Carreras Blasco, Laura
Ricart, Susagna
Puig Molina, Teresa
Obradors, Xavier
author Roura Grabulosa, Pere
author_facet Roura Grabulosa, Pere
Farjas Silva, Jordi
Eloussifi, Hichem
Carreras Blasco, Laura
Ricart, Susagna
Puig Molina, Teresa
Obradors, Xavier
author_role author
author2 Farjas Silva, Jordi
Eloussifi, Hichem
Carreras Blasco, Laura
Ricart, Susagna
Puig Molina, Teresa
Obradors, Xavier
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (Espanya)
Generalitat de Catalunya. Agència de Gestió d'Ajuts Universitaris i de Recerca
dc.subject.none.fl_str_mv Piròlisi
Descomposició (Química)
Pyrolysis
Decomposition (Chemistry)
Anàlisi tèrmica
Thermal analysis
topic Piròlisi
Descomposició (Química)
Pyrolysis
Decomposition (Chemistry)
Anàlisi tèrmica
Thermal analysis
description The thermal decomposition of several metal organic precursors, used in the preparation of YBa2Cu3O7−x superconducting coated conductors (Cu acetate, Cu, Y and Ba trifluoroacetates and Ce propionate) is analyzed by means of several thermoanalytical techniques (TG/DTA, MS and DSC). In all cases, the metal organic precursors deposited as thin films decompose differently than powders from the same precursors. In thin films, decomposition is facilitated by the easier transport of reactive gas from the surrounding atmosphere and by the easier out-diffusion of volatile products. Consequently, films decompose at lower temperature and are more sensitive to the presence of any residual reactive gas in the furnace. Good thermal contact with the substrate is also shown to minimize overheating in films and avoid combustion processes that are otherwise often observed during the thermal decomposition of powders. Finally, the formation and stability of intermediate products towards the oxide formation, such as metal fluorides, differs in films because of the easier gas exchange. With respect to powders, these compounds are much less stable in films, where their decomposition temperature can be lowered by several hundreds of degrees Celsius. While in some cases the behaviour of films can be predicted by analyzing varying masses of precursor powders, this is not always the case. Therefore, thermal analysis carried out on films is recommended to avoid erroneous conclusions about materials preparation drawn from powders
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/10586
http://hdl.handle.net/10256/10586
url http://hdl.handle.net/10256/10586
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tca.2014.12.016
info:eu-repo/semantics/altIdentifier/issn/0040-6031
info:eu-repo/grantAgreement/MICINN//MAT2011-28874-C02-02
AGAUR/2009-2013/2009 SGR-185
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Thermochimica Acta, 2015, vol. 601, núm. 10, p. 1-8
Articles publicats (D-F)
Roura Grabulosa, Pere Farjas Silva, Jordi Eloussifi, Hichem Carreras Blasco, Laura Ricart, Susagna Puig, Teresa Obradors, Xavier 2015 Thermal analysis of metal organic precursors for functional oxide preparation: Thin films versus powders Thermochimica Acta 601 10 1 8
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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