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RESEARCH PRODUCT

Structural characterization of mixed Ta–Re oxide films

R. KalendarevEnzo CazzanelliJ. PuransJ. PuransMarco CastriotaAlexei Kuzmin

subject

Materials scienceInorganic chemistryOxideAnalytical chemistrychemistry.chemical_elementGeneral ChemistryRheniumCondensed Matter PhysicsAmorphous solidMetalchemistry.chemical_compoundsymbols.namesakechemistryvisual_artPhase (matter)Cavity magnetronvisual_art.visual_art_mediumsymbolsGeneral Materials ScienceThin filmRaman spectroscopy

description

Thin films of mixed Ta and Re oxides have been produced by reactive dc magnetron co-sputtering of pure Ta and Re metal targets in Ar–O2 atmosphere. The structural evolution of these films has been studied as a function of the composition, starting from a pure tantalum oxide film up to about 82% rhenium content. The composition and the structure of the films have been investigated by using X-ray diffraction and micro-Raman spectroscopy. For low Re content (20%), islands of a well crystallized phase, based on ReO4 groups, appear in the films still composed by pure amorphous tantalum oxide, while a mixed disordered solid phase is found for the highest Re concentration (82%). © 2006 Elsevier B.V. All rights reserved.

https://doi.org/10.1016/j.ssi.2006.07.018