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Germanate NdGaGe2O7: Synthesis, Structure, and Thermophysical Properties

  • THERMODYNAMICS OF INORGANIC COMPOUNDS
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Abstract

Polycrystalline samples of gallium neodymium germanate NdGaGe2O7 were synthesized by solid-phase reactions from a stoichiometric mixture of oxides Nd2O3, Ga2O3, and GeO2 under sequential stepwise calcination in the air at temperatures in the range 1273–1473 K. The heat capacity–temperature dependence for the synthesized samples was studied by differential scanning calorimetry in the range 350–1000 K. The experimental Cp = f(T) data were used to calculate the thermodynamic functions (enthalpy, entropy, and reduced Gibbs energy changes) of NdGaGe2O7.

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Authors and Affiliations

  1. Institute of Nonferrous Metals and Material Science, Siberian Federal University, 660041, Krasnoyarsk, Russia

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

  2. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, 119991, Moscow, Russia

    Yu. F. Kargin

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  1. L. T. Denisova
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  2. Yu. F. Kargin
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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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Translated by E. Glushachenkova

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Denisova, L.T., Kargin, Y.F., Irtyugo, L.A. et al. Germanate NdGaGe2O7: Synthesis, Structure, and Thermophysical Properties. Russ. J. Inorg. Chem. 65, 631–635 (2020). https://doi.org/10.1134/S0036023620050071

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  • DOI: https://doi.org/10.1134/S0036023620050071

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