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High-Temperature Heat Capacity of the PrFeGe2O7 and NdFeGe2O7 Germanates in the Range 350–1000 K

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Abstract

The PrFeGe2O7 and NdFeGe2O7 germanates have been prepared by solid-state reactions using stoichiometric mixtures of Pr2O3 (Nd2O3), Fe2O3, and GeO2 as starting oxides, which were sequentially fired between 1273 and 1473 K in air, and their high-temperature heat capacity has been determined by differential scanning calorimetry. The experimental Cp(T) data obtained have been used to evaluate their thermodynamic properties.

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Funding

This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target for Siberian Federal University in 2017–2019, project no. 4.8083.2017/8.9: Establishing a Database of Thermodynamic Characteristics of Multifunctional Mixed-Oxide Materials Containing Rare and Trace Elements).

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Authors and Affiliations

  1. Institute of Nonferrous Metals and Materials Science, Siberian Federal University, Svobodnyi pr. 79, 660041, Krasnoyarsk, Russia

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

  2. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, 119991, Moscow, Russia

    Yu. F. Kargin

Authors
  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 O. Tsarev

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Denisova, L.T., Kargin, Y.F., Irtyugo, L.A. et al. High-Temperature Heat Capacity of the PrFeGe2O7 and NdFeGe2O7 Germanates in the Range 350–1000 K. Inorg Mater 56, 754–758 (2020). https://doi.org/10.1134/S0020168520070043

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  • DOI: https://doi.org/10.1134/S0020168520070043

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