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Nanoparticulate SnO2 powders doped with europium (0.5 at%) were prepared by using sol‐gel method. The samples were sintered in air or argon at temperatures ranging from 600 to 1400 °C. Raman‐, SEM‐ and photoluminescence characterization of the samples was carried out. The heat‐treated samples exposed mainly broad emission bands typical of Eu3+ ions in disordered surrounding when excited at 464 nm...
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