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Heat Capacity and Thermodynamic Functions of ErInGe2O7 and TbInGe2O7 Germanates in the Range 350–1000 K

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Abstract

ErInGe2O7 and TbInGe2O7 have been synthesized from the parent oxides by a ceramic method through the multistep annealing in air in the temperature range 1273–1473 K. The high-temperature heat capacity of these oxides has been measured by the differential scanning calorimetry method (350–1000 K). Their thermodynamic properties have been calculated from the experimental dependences Cp = f(T).

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FUNDING

This work was supported in the framework of the State assignment of the Ministry of Education and Science of the Russian Federation for Siberian Federal University for 2017–2019 (project no. 4.8083.2017/8.9 “Formation of the database of thermodynamic characteristics of complex oxide polyfunctional materials containing rare and scattered elements”).

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Authors and Affiliations

  1. Siberian Federal University, 660041, Krasnoyarsk, Russia

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

  2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    A. D. Izotov

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

    Yu. F. Kargin

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  1. L. T. Denisova
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  2. A. D. Izotov
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  3. Yu. F. Kargin
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  4. L. A. Irtyugo
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  5. V. V. Beletskii
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  6. N. V. Belousova
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  7. 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., Izotov, A.D., Kargin, Y.F. et al. Heat Capacity and Thermodynamic Functions of ErInGe2O7 and TbInGe2O7 Germanates in the Range 350–1000 K. Dokl Phys Chem 486, 70–72 (2019). https://doi.org/10.1134/S0012501619050026

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  • DOI: https://doi.org/10.1134/S0012501619050026

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