Cluster formation is studied after sequential double implantation (Cu, Ni;
Ag, S) in silica and soda-lime glass. The structure and properties of nanoc
luster composites are investigated by optical absorption spectroscopy and t
ransmission electron microscopy, evidencing the formation of core-shell str
uctures. The presence of metal alloy clusters is also investigated by means
of synchrotron-radiation-based techniques. (C) 1999 Elsevier Science B.V.
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