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Synthesis, Crystal Structure, and Thermodynamic Properties of CuSm2Ge2O8

  • SYNTHESIS AND PROPERTIES OF INORGANIC COMPOUNDS
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Abstract

Copper samarium germanate CuSm2Ge2O8 have been synthesized by the ceramic method from CuO, Sm2O3, and GeO2 in air at the final calcination temperature 1273 K (200 h), and its crystal structure has been determined (space group Cm; a = 9.7592(2) Å, b = 15.2608(4) Å, c = 8.2502(2) Å, β = 148.2566(8)°, V = 646.46(3) Å3). The temperature dependence of the molar heat capacity Cp = f(T) measured in the temperature range 350–1000 K shows a maximum at Tmax = 498.5 K caused by the phase transition. Thermodynamic properties have been calculated from experimental data.

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ACKNOWLEDGMENTS

The authors are grateful to the Krasnoyarsk Regional Shared Facility Center of the Federal Research Center of the KSC SB RAS.

Funding

This work was carried out with partial financial support within the framework of the State assignment for science of the Siberian Federal University, project number FSRZ-2020-0013.

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Authors and Affiliations

  1. Siberian Federal University, 660041, Krasnoyarsk, Russia

    L. T. Denisova, M. S. Molokeev, L. A. Irtyugo, N. V. Belousova & V. M. Denisov

  2. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

    M. S. Molokeev

  3. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119991, Moscow, Russia

    Yu. F. Kargin

Authors
  1. L. T. Denisova
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  2. M. S. Molokeev
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  3. Yu. F. Kargin
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  4. L. A. Irtyugo
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  5. N. V. Belousova
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  6. V. M. Denisov
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Correspondence to L. T. Denisova.

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Translated by G. Kirakosyan

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Denisova, L.T., Molokeev, M.S., Kargin, Y.F. et al. Synthesis, Crystal Structure, and Thermodynamic Properties of CuSm2Ge2O8. Russ. J. Inorg. Chem. 66, 1817–1821 (2021). https://doi.org/10.1134/S0036023621120020

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