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Title

Annealing of heterogeneous phase TiO2 films: An X-ray absorption and morphological study

AuthorsGago, Raúl ; Redondo-Cubero, A.; Vinnichenko, M.; Vázquez, Luis
Issue Date2011
PublisherElsevier
CitationChemical Physics Letters 511(4-6): 367-371 (2011)
AbstractHeterogeneous TiO2 films with nanocrystalline (nc-) rutile and amorphous (a-) phases were annealed in vacuum up to 450 °C. The structural and morphological changes were studied by in situ X-ray absorption and ex-situ X-ray diffraction and atomic force microscopy. The annealing process leads to phase and morphological changes depending on the initial phase mixture. Films with dominant nc-rutile phase are quite stable whereas in a-TiO 2-containing films the a-TiO2 regions crystallize into nc-anatase at 300 °C. The latter is attributed to the initial anatase-like character of a-TiO2. Interestingly, at 450 °C nc-anatase or nc-rutile is preferentially promoted for high or low initial a-TiO2 contents, respectively. © 2011 Elsevier B.V. All rights reserved.
DescriptionEl pdf del artículo es la versión post-print.
Publisher version (URL)http://dx.doi.org/10.1016/j.cplett.2011.06.061
URIhttp://hdl.handle.net/10261/93680
DOI10.1016/j.cplett.2011.06.061
Identifiersdoi: 10.1016/j.cplett.2011.06.061
issn: 0009-2614
Appears in Collections:(ICMM) Artículos
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