Heat capacity and thermodynamic functions of thulium tellurites in the range of 298.15–673 K

K. T. Rustembekov; A. T. Dyusekeeva; A. Zh. Bekturganova; B. K. Kasenov; N. A. Makhatova; V. N. Fomin

doi:10.1134/S0036024416020266

Heat capacity and thermodynamic functions of thulium tellurites in the range of 298.15–673 K

Authors: Rustembekov K.T.¹, Dyusekeeva A.T.¹, Bekturganova A.Z.¹, Kasenov B.K.², Makhatova N.A.¹, Fomin V.N.¹
Affiliations:
1. Buketov Karaganda State University
2. Abishev Chemicometallurgical Institute
Issue: Vol 90, No 2 (2016)
Pages: 263-266
Section: Chemical Thermodynamics and Thermochemistry
URL: https://journals.rcsi.science/0036-0244/article/view/167669
DOI: https://doi.org/10.1134/S0036024416020266
ID: 167669

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Abstract

The isobaric heat capacity of double thulium tellurites is studied via dynamic calorimetry in the range of 298.15–673 K. It is used as the basis for deriving the equation C_p^o ∼ f(T) and determining the thermodynamic functions. Dependences C_p^o ∼ f(T) are found to have second-order phase λ-transitions.