Email this article Synthesis and heat capacity study of stannates Dy2Sn2O7 and Ho2Sn2O7 in the range 370–1000 K
- Authors: Denisova L.T.1, Irtyugo L.A.1, Kargin Y.F.2, Denisov V.M.1, Beletskii V.V.1
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Affiliations:
- Institute of Nonferrous Metals and Materials Science
- Baikov Institute of Metallurgy and Material Sciences
- Issue: Vol 62, No 6 (2017)
- Pages: 814-817
- Section: Physical Methods of Investigation
- URL: https://journal-vniispk.ru/0036-0236/article/view/167773
- DOI: https://doi.org/10.1134/S0036023617060043
- ID: 167773
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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.
About the authors
L. T. Denisova
Institute of Nonferrous Metals and Materials Science
Author for correspondence.
Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041
L. A. Irtyugo
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041
Yu. F. Kargin
Baikov Institute of Metallurgy and Material Sciences
Email: antluba@mail.ru
Russian Federation, Moscow, 119991
V. M. Denisov
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041
V. V. Beletskii
Institute of Nonferrous Metals and Materials Science
Email: antluba@mail.ru
Russian Federation, Krasnoyarsk, 660041
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