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Crystallochemical and Voltammetric Characterization of the Zn2 – 2хMn2хSiO4 Luminophor

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Abstract

The region of homogeneity in a solid solution of the nominal composition Zn2 – 2xMn2xSiO4 (х ≤ 0.21 ± 0.01) is determined. A comparison of the values of the pycnometric and X-ray densities for the compositions with x ≥ 0.13 ± 0.01 indicates the coexistence of manganese ions in two charge states: Mn2+ and Mn3+. It is established voltammetrically that all of the manganese ions in Zn1.8Mn0.2SiO4 are divalent, and the concentrations of Mn2+ and Mn3+ ions in Zn1.6Mn0.4SiO4 are comparable. The oxidation of some Mn2+ ions results in the concentration quenching of luminescence in Zn2 – 2xMn2xSiO4 solid solutions at х > 0.13 ± 0.01.

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Authors and Affiliations

  1. Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, 620990, Yekaterinburg, Russia

    T. A. Onufrieva, L. Yu. Buldakova, M. Yu. Yanchenko, N. A. Zaitseva & T. I. Krasnenko

  2. Ural State Mining University, Yekaterinburg, Russia

    N. A. Zaitseva

Authors
  1. T. A. Onufrieva
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  2. L. Yu. Buldakova
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  3. M. Yu. Yanchenko
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  4. N. A. Zaitseva
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  5. T. I. Krasnenko
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Correspondence to N. A. Zaitseva.

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Translated by O. Kadkin

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Onufrieva, T.A., Buldakova, L.Y., Yanchenko, M.Y. et al. Crystallochemical and Voltammetric Characterization of the Zn2 – 2хMn2хSiO4 Luminophor. Russ. J. Phys. Chem. 92, 1413–1416 (2018). https://doi.org/10.1134/S003602441807021X

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  • DOI: https://doi.org/10.1134/S003602441807021X

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