December 2, 2025

HEAT CAPACITY AND THERMODYNAMIC PROPERTIES OF COMPLEX OXIDES WITH β-PYROCLORE STRUCTURE CsTeMoO AND CsVTeO

Key Points

Heat capacity analysis shows complex oxide behavior in a broad temperature range, establishing data from 5–500 K.
Key metrics include thermodynamic properties like enthalpy, absolute entropy, and Gibbs energy calculated based on experimental data.
Analysis using the multifractal model indicates unique low-temperature heat capacity behaviors below 50 K across the compounds.
Findings suggest structural insights into β-pyrochlore complex oxides, warranting further studies on material properties.

Abstract

The heat capacity of complex oxides with β-pyrochlore structure CsTeMoO and CsVTeO was investigated by adiabatic vacuum and differential scanning calorimetry in the temperature range of = 5–500 K. The standard thermodynamic functions: heat capacity , enthalpy , absolute entropy and the Gibbs energy for the range from → 0 to 500 K were calculated based on the obtained experimental data. The low-temperature ( 50 K) heat capacity dependence was analyzed on the basis of multifractal model and chain-layered structure topology of the studied compounds was established.

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