Abstract
The study deals with complex investigation of segregation phenomenon of Eu 3 + ( 1.0 mol % EuF 3 ) and Tb 3 + ions ( 1.2 mol % TbF 3 ) in Ba ( PO 3 ) 2 – MgCaSrBaAl 2 F 14 glasses, by using photoluminescence methods, followed by Rayleigh and Mandelstam–Brillouin scattering (RMBS) measurements. It is shown that the local environment of rare-earth ions depends on the ratio of rare-earth concentration and phosphate component content. The results are interpreted in terms of doping-ion segregation model.
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