Structure and Luminescent Properties of Solid Solutions in the PbF2–EuF3 and PbF2–ErF3 Systems

The structure and spectral-luminescent properties of solid solutions in the PbF ₂ -EuF ₃ and PbF ₂ -ErF ₃ systems obtained by both solid-phase reaction and co-precipitation from solutions are investigated. Nanopowders of compositions Pb _1-x Eu _x F _2+x or Pb _1-x Er _x F _2+x with a size of 40 nm were obtained by co-precipitation. The boundaries of the existence of a solid solution at a high and low temperature are determined. The differences in the luminescence spectra for solid solutions obtained by different methods are studied.