De, Goutam and Gusso, M and Tapfer, L and Catalano, M and Gonella, F and Mattei, G and Mazzoldi, P and Battaglin, G (1996) Annealing behavior of silver, copper, and silver-copper nanoclusters in a silica matrix synthesized by the sol-gel technique. Journal of Applied Physics, 80 (12). pp. 6734-6739. ISSN 0021-8979

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Abstract

Silver, copper, and mixed silver–copper nanocluster-doped silica thin layers were prepared by the sol-gel process. Samples were heat treated in different annealing atmospheres ~air, argon, or 5%H2–95%N2! in the temperature range 500–1100 °C. Specimens were characterized by optical absorption spectroscopy, Rutherford backscattering spectrometry, x-ray diffraction, and transmission electron microscopy. Cluster growth and dissolution, as well as migration of metal atoms towards the sample surface, with a subsequent evaporation, were observed to occur at temperatures that depend on the annealing atmosphere. In the mixed silver–copper system, the formation of Ag–Cu phase-separated clusters was observed.

Item Type:	Article
Subjects:	Microstructure and Characterization
Divisions:	Sol Gel
Depositing User:	Bidhan Chaudhuri
Date Deposited:	31 Jul 2012 08:29
Last Modified:	31 Jul 2012 08:29
URI:	http://cgcri.csircentral.net/id/eprint/1708

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