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Structural studies of nanoparticles doped with rare-earth ions in oxyfluoride lead-silicate glasses

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Abstract

Formation of PbF2 nanoparticles as up-conversion luminescent centers in oxyfluoride lead-silicate glass matrixes doped with rare-earth oxides has been studied by means of small-angle neutron scattering and neutron diffraction methods. During a two-stage heat treatment process, amorphous nanoparticles with sizes of ~ 5–7 nm were initially formed, then were aggregated into more complex clusters with average dimensions up to ~ 30 nm. The thermal treating at higher temperature led to crystallization of amorphous nanoparticles and, as a result, the formation of up-conversion luminescent centers in studied lead-silicate glasses. The sizes of amorphous and crystalline nanoparticles, fractional dimensions of density fluctuations in glass materials, as well as the lattice parameters of a phase of PbF2 were calculated.

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Correspondence to Sergey E. Kichanov.

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Kichanov, S.E., Kozlenko, D.P., Gorshkova, Y.E. et al. Structural studies of nanoparticles doped with rare-earth ions in oxyfluoride lead-silicate glasses. J Nanopart Res 20, 54 (2018). https://doi.org/10.1007/s11051-018-4156-z

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  • DOI: https://doi.org/10.1007/s11051-018-4156-z

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