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Published online by Cambridge University Press: 17 March 2011
Sequential ion implantation of two metal species in silica glass may giverise to the formation of alloy metal nanoclusters. Composite materials withpeculiar optical properties can be therefore fabricated, with application inintegrated-optical devices. In the presented experiments, different couplesof transition elements were sequentially implanted in a silica glass. Theresulting systems, in some cases after annealing in either reducing oroxidizing atmosphere, were studied by several analytical techniques, such astransmission electron microscopy and X-ray absorption spectroscopy. Theformation of different alloy nanoclusters was evidenced, together with thecluster crystalline structure and the chemical environment of the dopantspecies.