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Thermoanalytical study of the decomposition of yttrium trifluoroacetate thin films

We present the use of the thermal analysis techniques to study yttrium trifluoroacetate thin films decomposition.In situ analysis was done by means of thermogravimetry, differential thermal analysis, and evolved gas analysis.Solid residues at different stages and the final product have been characterized by X-ray diffraction and scanning electron microscopy.The thermal decomposition of yttrium trifluoroacetate thin films results in the formation of yttria and presents the same succession of intermediates than powder’s decomposition, however, yttria and all intermediates but YF3 appear at significantly lower temperatures.We also observe a dependence on the water partial pressure that was not observed in the decomposition of yttrium trifluoroacetate powders.Finally, a dependence on the substrate chemical composition is discerned

This work was partially funded by the Spanish Programa Nacional de Materiales through projects MAT2011-28874-C02-01 and MAT2011-28874-C02-02, by the Consolider program Nanoselect, CSD2007-00041, EU project EUROTAPES NMP3-LA-2012-280432 and by the Generalitat de Catalunya contract nos. 2009SGR-185 and 2009SGR-770

Elsevier

Manager: Ministerio de Ciencia e Innovación (Espanya)
Generalitat de Catalunya. Agència de Gestió d’Ajuts Universitaris i de Recerca
Author: Eloussifi, Hichem
Farjas Silva, Jordi
Roura Grabulosa, Pere
Ricart, Susagna
Puig, Teresa
Obradors, Xavier
Dammak, Mohamed Chedly
Date: 2020 February 15
Abstract: We present the use of the thermal analysis techniques to study yttrium trifluoroacetate thin films decomposition.In situ analysis was done by means of thermogravimetry, differential thermal analysis, and evolved gas analysis.Solid residues at different stages and the final product have been characterized by X-ray diffraction and scanning electron microscopy.The thermal decomposition of yttrium trifluoroacetate thin films results in the formation of yttria and presents the same succession of intermediates than powder’s decomposition, however, yttria and all intermediates but YF3 appear at significantly lower temperatures.We also observe a dependence on the water partial pressure that was not observed in the decomposition of yttrium trifluoroacetate powders.Finally, a dependence on the substrate chemical composition is discerned
This work was partially funded by the Spanish Programa Nacional de Materiales through projects MAT2011-28874-C02-01 and MAT2011-28874-C02-02, by the Consolider program Nanoselect, CSD2007-00041, EU project EUROTAPES NMP3-LA-2012-280432 and by the Generalitat de Catalunya contract nos. 2009SGR-185 and 2009SGR-770
Document access: http://hdl.handle.net/2072/372402
Language: eng
Publisher: Elsevier
Rights: Tots els drets reservats
Subject: Pyrolysis
Thermal analysis
Thin films
Anàlisi tèrmica
Piròlisi
Capes fines
Itri
Yttrium
Title: Thermoanalytical study of the decomposition of yttrium trifluoroacetate thin films
Type: info:eu-repo/semantics/article
Repository: Recercat

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