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Synthesis and luminescent properties of new tungstates Ln2Zr(WO4)5 (Ln = Tb, Dy)

B. G. Bazarov, S. G. Dorzhieva, R. Y. Shendrik, Y. L. Tushinova, Ts. T. Bazarova, D. O. Sofich, O. D. Chimitova, J. G. Bazarova

Abstract


New polycrystalline powder samples of double Ln2Zr(WO4)5 (Ln = Dy, Tb) tungstates were synthesized using high-temperature solid-phase and sol-gel methods. The conditions of the sol-gel synthesis of tungstates were optimized. The obtained phases were characterized by the X-ray powder diffraction on the basis of the crystallographic data of similar Ln–Zr molybdates. It is found that Ln2Zr(WO4)5 (Ln = Dy, Tb) double tungstates crystallize in the orthorhombic crystal system, space group Cmc21 (Z = 4). The intensive luminescence in the green spectral region for Tb2Zr(WO4)5 and yellow spectral region for Dy2Zr(WO4)5 was shown.


Keywords


solid-phase synthesis; sol-gel technology; framework structure; luminescence; tungstates; lanthanides

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References


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DOI: https://doi.org/10.15826/chimtech.2022.9.2.05

Copyright (c) 2021 B.G. Bazarov, R.Y. Shendrik, Y.L. Tushinova, Ts.T. Bazarova, D.O. Sofich, O.D. Chimitova, S.G. Dorjieva, J.G. Bazarova

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