Annealing behavior of silver, copper, and silver–copper nanoclusters in a silica matrix synthesized by the sol-gel technique
- 15 December 1996
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 80 (12) , 6734-6739
- https://doi.org/10.1063/1.363800
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.This publication has 11 references indexed in Scilit:
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