Browsing by Author "Califano, V."

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    Structure and Spectral-Luminescent Properties of Silica Gel-Glasses Containing CeO₂ - Ln₂O₃ Nanoparticles: Influence of Local Charge Compensator
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 2004) Malashkevich, G. E.; Semkova, G. I.; Semchenko, A. V.; Sigaev, V. N.; Sourkhov, S. S.; Califano, V.; Champagnon, B.
    Silica glasses activated with CeO₂-Ln₂O₃ nanocrystallites where Ln=Nd, Sm, Eu, Er have been synthesized by a direct sol - gel - glass transition and their investigation with help of an X-ray diffraction, small-angle neutron scattering, and spectral-luminescent methods carried out. It is established that co-doping of the glasses with magnesium for local charge compensation leads both to significant increase of the nanocrystallites concentration and limitation of their sizes.