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Synthesis and heat capacity study of stannates Dy2Sn2O7 and Ho2Sn2O7 in the range 370–1000 K

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Abstract

Stannates Dy2Sn2O7 and Ho2Sn2O7 are produced by solid-phase synthesis from Dy2O3 (Ho2O3)–SnO2 stoichiometric mixtures by calcining at 1473 K. The molar heat capacity of holmium and dysprosium stannates is measured by differential scanning calorimetry (DSC) in the temperature range 370–1000 K. The experimental data are used to calculate thermodynamic properties (enthalpy change H°(T)–H°(370 K), entropy change S°(T)–S°(370 K), and the reduced Gibbs free energy Φ°(T)) of the synthesized compound.

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Authors and Affiliations

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

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

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

    Yu. F. Kargin

Authors
  1. L. T. Denisova
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  2. L. A. Irtyugo
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  3. Yu. F. Kargin
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  4. V. M. Denisov
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  5. V. V. Beletskii
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Correspondence to L. T. Denisova.

Additional information

Original Russian Text © L.T. Denisova, L.A. Irtyugo, Yu.F. Kargin, V.M. Denisov, V.V. Beletskii, 2017, published in Zhurnal Neorganicheskoi Khimii, 2017, Vol. 62, No. 6, pp. 834–837.

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Denisova, L.T., Irtyugo, L.A., Kargin, Y.F. et al. Synthesis and heat capacity study of stannates Dy2Sn2O7 and Ho2Sn2O7 in the range 370–1000 K. Russ. J. Inorg. Chem. 62, 814–817 (2017). https://doi.org/10.1134/S0036023617060043

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  • DOI: https://doi.org/10.1134/S0036023617060043

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