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Structure and Thermodynamic Properties of the SmGaGe2O7 Oxide

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Abstract

The SmGaGe2O7 oxide material has been obtained from initial Sm2O3, Ga2O3, and GeO2 oxides by solid-phase synthesis with annealing in air in the temperature range of 1273–1473 K. The structure of the investigated germanate (sp. gr. P21/c, a = 7.18610(9) Å, b = 6.57935(8) Å, and c = 12.7932(2) Å) has been established by X-ray diffraction and the high-temperature heat capacity has been determined by differential scanning calorimetry. Using the experimental data on Cp = f(T), the thermodynamic properties of the compound have been calculated.

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Funding

This study was carried out within the state assignment of the Ministry of Science and Higher Education of the Russian Federation to the Siberian Federal University in 2017–2019, project no. 4.8083.2017/8.9 “Formation of a Data Bank of Thermodynamic Characteristics of the Complex-Oxide Multifunctional Materials Containing Rare and Scattered Elements.”

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Authors and Affiliations

  1. Siberian Federal University, 660041, Krasnoyarsk, Russia

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

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

    M. S. Molokeev

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  1. L. T. Denisova
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  2. M. S. Molokeev
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  3. L. A. Irtyugo
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  4. V. V. Beletskii
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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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The authors declare that they have no conflicts of interest.

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Translated by E. Bondareva

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Denisova, L.T., Molokeev, M.S., Irtyugo, L.A. et al. Structure and Thermodynamic Properties of the SmGaGe2O7 Oxide. Phys. Solid State 62, 384–387 (2020). https://doi.org/10.1134/S1063783420020109

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  • DOI: https://doi.org/10.1134/S1063783420020109

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