Abstract
Phosphate (PKBAN: P2O5+K2O +BaO +Al2O3+Nd2O3) andfluorophosphate (PKBFAN: P2O5+K2O +BaO +BaF2+Al2O3+Nd2O3 and PKBAFN: P2O5+K2O +BaO +Al2O3+AlF3+Nd2O3) glasses were prepared with three concentrations (0.1, 1.0 and 2.0 mol%) ofNd3+ ionsand their detailed luminescence properties have been investigated. Absorption spectra for 1.0 mol%of Nd3+-doped glasses have been analysed using Judd–Ofelt (JO) theory. The observed bands inabsorption spectra from ground to excited states are assigned and analysed with theparameterized free-ion Hamiltonian model. The JO parameters have been used topredict radiative properties for (J = 15/2, 13/2,11/2 and9/2) transitionsof Nd3+ ions in these glasses. The Inokuti–Hirayama model has been applied to the non-exponentialbehaviour of the decay profiles to investigate the mechanism involved in the energy transferbetween the donors and acceptors.
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