Synthesis and high-temperature heat capacity of Yb 2 Sn 2 O 7  and Lu 2 Sn 2 O 7

L. T. Denisova; L. A. Irtyugo; Yu. F. Kargin; V. M. Denisov; V. V. Beletskii

doi:10.1134/S0020168517050053

Synthesis and high-temperature heat capacity of Yb₂Sn₂O₇ and Lu₂Sn₂O₇

作者: Denisova L.T.¹, Irtyugo L.A.¹, Kargin Y.F.², Denisov V.M.¹, Beletskii V.V.¹
隶属关系:
1. Institute of Nonferrous Metals and Materials Science
2. Baikov Institute of Metallurgy and Materials Science
期: 卷 53, 编号 5 (2017)
页面: 510-513
栏目: Article
URL: https://journals.rcsi.science/0020-1685/article/view/158221
DOI: https://doi.org/10.1134/S0020168517050053
ID: 158221

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Yb₂Sn₂O₇ and Lu₂Sn₂O₇ have been prepared by solid-state reactions, by firing mixtures of Yb₂O₃ or Lu₂O₃ and SnO₂ at 1473 K, and the molar heat capacity of these compounds (pyrochlore structure) has been determined by differential scanning calorimetry. The C_p(T) data have been used to evaluate the thermodynamic properties of the stannates: enthalpy increment, entropy change, and reduced Gibbs energy.