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Low-Temperature Heat Capacity of M-Type Terbium Orthotantalate and Schottky Anomaly

  • THERMODYNAMICS OF INORGANIC COMPOUNDS
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Abstract

The molar heat capacity of М-type terbium orthotantalate was measured by adiabatic calorimetry in the range 18–346 K. Smoothed heat capacity values were used to calculate the entropy, enthalpy gain, and reduced Gibbs free energy. The Schottky anomalous heat capacity in lanthanide compounds and its evaluation methods were analyzed.

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ACKNOWLEDGMENTS

The equipment of the Shared Facilities Center of the Kurnakov Institute was used in the frame of the Governmental assignment to the Kurnakov Institute in the field of fundamental research.

Funding

This study was supported by the Russian Foundation for Basic Research (project no. 18-13-00025).

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Authors and Affiliations

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

    K. S. Gavrichev, A. V. Tyurin, V. N. Gus’kov, P. G. Gagarin, A. V. Gus’kov & M. A. Ryumin

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  1. K. S. Gavrichev
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  2. A. V. Tyurin
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  3. V. N. Gus’kov
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  4. P. G. Gagarin
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  5. A. V. Gus’kov
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  6. M. A. Ryumin
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Corresponding author

Correspondence to V. N. Gus’kov.

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Translated by O. Fedorova

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Gavrichev, K.S., Tyurin, A.V., Gus’kov, V.N. et al. Low-Temperature Heat Capacity of M-Type Terbium Orthotantalate and Schottky Anomaly. Russ. J. Inorg. Chem. 65, 655–662 (2020). https://doi.org/10.1134/S0036023620050083

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