Nonlinear behavior of structural and luminescent properties in Gd(NbxTa1-x)O-4 mixed crystals

O. Voloshyna (1) , O. Sidletskiy (1) , D. Spassky (2) , I. Gerasymov (1) , I. Romet (3) , Andrei Belsky (4)

1 Institute for Scintillation Materials of NASU
2 SINP - D.V. Skobeltsyn Institute of Nuclear Physics
3 Institute of Physics [Tartu]
4 ILM - Institut Lumière Matière [Villeurbanne]

Ceramic samples of gadolinium tantalo-niobate mixed crystals were obtained by the solid-state technique. The dependence of luminescence properties on the Nb/Ta ratio in the Gd(Nb_xTa_1-x)O₄ system is studied in the 5–450 K temperature range, including thermostimulated luminescence curves in the series of solid solutions. The relation of nonlinear behavior of light output with x variation to non-homogeneous distribution of Nb and Ta in solid solutions is discussed.

Mots clés: Mixed crystals; Luminescence; Lattice parameters; Clusterization; GdNbO4; GdTaO4

Domaines: Chimie; Physique [physics]; Sciences de l'ingénieur [physics]

O. Voloshyna, O. Sidletskiy, D. Spassky, I. Gerasymov, I. Romet, et al.. Nonlinear behavior of structural and luminescent properties in Gd(NbxTa1-x)O-4 mixed crystals. Optical Materials, 2018, 76, pp.382-387. ⟨10.1016/j.optmat.2018.01.003⟩. ⟨hal-02289864⟩