High-Temperature Specific Heat of the TmBiGeO 5  and YbBiGeO 5  Compounds

L. T. Denisova; N. V. Belousova; N. A. Galiakhmetova; V. M. Denisov; E. O. Golubeva

doi:10.1134/S1063783418020099

High-Temperature Specific Heat of the TmBiGeO₅ and YbBiGeO₅ Compounds

Authors: Denisova L.T.¹, Belousova N.V.¹, Galiakhmetova N.A.¹, Denisov V.M.¹, Golubeva E.O.¹
Affiliations:
1. Siberian Federal University
Issue: Vol 60, No 2 (2018)
Pages: 267-270
Section: Semiconductors
URL: https://journal-vniispk.ru/1063-7834/article/view/202028
DOI: https://doi.org/10.1134/S1063783418020099
ID: 202028

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Abstract

The TmBiGeO₅ and YbBiGeO₅ compounds have been synthesized from Tm₂O₃ (Yb₂O₃), Bi₂O₃, and GeO₂ oxides by the solid-state synthesis with successive burning at 1003, 1073, 1123, 1143, 1173, and 1223 K. High-temperature specific heat of the oxide compounds has been measured by differential scanning calorimetry. Basing on the experimental dependences C_p = f(T), the thermodynamic properties of the oxide compounds, i.e., the enthalpy and entropy variations, have been calculated.