Thermoanalytical study of the decomposition of yttrium trifluoroacetate thin films

THIN SOLID FILMS

卷:545

Article

Eloussifi, H.^1,2  Farjas, J.¹  Roura, P.¹  Ricart, S.³  Puig, T.³  Obradors, X.³  Dammak, M.² 

[1] Univ Girona, Dept Phys, GRMT, E-17071 Girona, Catalonia, Spain

[2] Univ Sfax, Fac Sci Sfax, Chim Inorgan Lab, Sfax 3000, Tunisia

[3] CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Catalonia, Spain

关键词: Yttrium trifluoroacetate;    Yttria;    Thin films;    Thermal decomposition;    Pyrolysis;    Thermal analysis;    Thermogravimetry;   

DOI  :  10.1016/j.tsf.2013.07.082

来源: Elsevier

【 摘 要 】

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. (C) 2013 Elsevier B. V. All rights reserved.

【 授权许可】

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