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Study of Phase Transformations in (Cs,NH4)4(HSO4)3(H2PO4) Crystals

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Abstract

Phase transitions in crystals of (Cs,NH4)4(HSO4)3(H2PO4) solid solutions have been investigated by synchronous thermal analysis and polarization microscopy at different temperatures. The temperatures of structural modifications are established; it is shown that the replacement of Cs cations with NH4 in Cs4(HSO4)3(H2PO4) crystals reduces the temperatures of phase transformations.

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ACKNOWLEDGMENTS

This study was performed using equipment of the Shared Research Center of the Federal Scientific Research Center “Crystallography and Photonics” of the Russian Academy of Sciences and was supported by the Russian Ministry of Education and Science (project RFMEFI62119X0035).

Funding

This study was supported by the Ministry of Science and Higher Education of the Russian Federation within a government contract with the Federal Scientific Research Centre “Crystallography and Photonics” of the Russian Academy of Sciences in the part concerning the growth of crystals of complex cesium sulfate phosphates and the Russian Foundation for Basic Research, project no. 18-32-20050, in the part concerning the analysis of the thermal and optical properties.

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Authors and Affiliations

  1. Shubnikov Institute of Crystallography, Federal Scientific Research Center “Crystallography and Photonics,” Russian Academy of Sciences, 119333, Moscow, Russia

    E. V. Selezneva, I. S. Timakov, V. A. Komornikov, V. V. Grebenev, O. B. Zajnullin & I. P. Makarova

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  1. E. V. Selezneva
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  2. I. S. Timakov
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  3. V. A. Komornikov
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  4. V. V. Grebenev
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  5. O. B. Zajnullin
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  6. I. P. Makarova
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Corresponding author

Correspondence to E. V. Selezneva.

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The authors declare that they have no conflicts of interest.

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Translated by A. Sin’kov

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Selezneva, E.V., Timakov, I.S., Komornikov, V.A. et al. Study of Phase Transformations in (Cs,NH4)4(HSO4)3(H2PO4) Crystals. Phys. Solid State 61, 2412–2414 (2019). https://doi.org/10.1134/S1063783419120473

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  • DOI: https://doi.org/10.1134/S1063783419120473

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