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Synthesis and Luminescent Properties of Bismuth Titanates Bi1.6HoxTi2O7 – δ and Bi1.6Mg0.1HoxTi2O7 – δ

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Abstract

Pyrochlores Bi1.6HoxTi2O7 – δ and Bi1.6Mg0.1Ho xTi2O7 – δ, where x = 0, 0.01, 0.05, and 0.1, and Bi1.5HoxTi2O7 – δ, where x = 0.25 and 0.5, have been synthesized and their structural, optical, and luminescence properties have been studied. As a result of analyzing the data obtained experimentally and the available theoretical data, it is shown that the intrinsic luminescence of the samples is due to the O2p ↔ Bi6p and Bi6s ↔ Bi6p electron transitions and the impurity luminescence is due to the ff transitions in Ho3+ and the O2p → Ho3+ charge transfer.

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Funding

The reported study was funded by RFBR according to the research project 19-03-00642.

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Correspondence to A. V. Ishchenko.

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Translated by Yu. Ryzhkov

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Ishchenko, A.V., Koroleva, M.S., Vlasov, M.I. et al. Synthesis and Luminescent Properties of Bismuth Titanates Bi1.6HoxTi2O7 – δ and Bi1.6Mg0.1HoxTi2O7 – δ. Phys. Solid State 61, 867–873 (2019). https://doi.org/10.1134/S1063783419050111

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  • DOI: https://doi.org/10.1134/S1063783419050111

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