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Nickel nanoparticles were grown in silica glass by annealing of the sol–gel prepared silicate matrices doped with nickel nitrate. TEM characterization of Ni/SiO 2 glass proves the formation of isolated spherical nickel nanoparticles with mean sizes 6.7 and 20nm depending on annealing conditions. The absorption and photoluminescence spectra of Ni/SiO 2 glasses were measured. In the...
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