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Nanocomposites of metallic copper and spinel ferrite films: Growth and self-assembly of copper particles

Mugnier, Emmanuelle and Pasquet, Isabelle and Barnabé, Antoine and Presmanes, Lionel and Bonningue, Corine and Tailhades, Philippe Nanocomposites of metallic copper and spinel ferrite films: Growth and self-assembly of copper particles. (2005) Thin Solid Films, vol. 4 (n° 1-2). ISSN 0040-6090

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Official URL: http://dx.doi.org/10.1016/j.tsf.2005.06.092

Abstract

Nanocomposites of metallic copper and iron oxides films have been prepared by RF-sputtering of pure CuFeO2 delafossite target. The films are made of copper and spinel ferrite crystallites of less than 10 nm in diameter. The content of metallic copper and the ferrite composition depend on the sputtering conditions. For the shortest substrate-target distances, films are made of copper and copper substituted magnetite with low copper content. The formation of the metallic and spinel phases is due to the loss of a small quantity of oxygen during sputtering. When annealed under inert atmosphere, nanometric copper particles located in the upper part of the film, move on the surface and grow due to coalescence phenomena. The particle motion can be stopped by small grooves allowing the self-assembly of copper particles.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Thin Solid Films website :http://www.sciencedirect.com/science/journal/00406090
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Thomas Bonnecarere
Deposited On:04 Sep 2008 09:07

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