Abstract
The heat capacity of perovskite-like layered titanates K2La2Ti3O10 and K2Nd2Ti3O10 is studied via precision adiabatic vacuum calorimetry in the temperature range of 7–350 K, and by differential scanning calorimetry in the range 350–670 K. Standard thermodynamic functions are calculated from experimental data on heat capacity in the temperature range of 9–670 K: enthalpy H(T) − H(9), entropy S(T) − S(9), and Gibbs function −[G(T) − G(9)].
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ACKNOWLEDGMENTS
This work was supported by the Russian Foundation for Basic Research, project no. 18-03-00915; and by the RF Ministry of Education and Science as part of task no. 4.6138.2017/VU, “Leading Researchers on a Permanent Basis.” TG measurements were made at the Thermogravimetric and Calorimetric Studies shared resource center. Phase and element composition were investigated at the X-ray Diffraction and Physical Means of Surface Studies shared resource centers in the Science Park of St. Petersburg State University.
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Sankovich, A.M., Markin, A.V., Smirnova, N.N. et al. Heat Capacity and the Thermodynamic Properties of Layered Perovskite-Like Oxides K2La2Ti3O10 and K2Nd2Ti3O10. Russ. J. Phys. Chem. 93, 407–416 (2019). https://doi.org/10.1134/S0036024419030178
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DOI: https://doi.org/10.1134/S0036024419030178