Abstract
This work is a continuation of our work on the thermodynamic study of synthetic analogues of the mineral argyrodite. In this work, a calorimetric study of the phase transition of the Cu8GeSe6 compound was carried out using the differential scanning calorimetry (DSC) method. Based on the data of DSC curves of samples of the studied compound with different masses, the temperature and enthalpy of the phase transition from the low-temperature orthorhombic modification to the high-temperature cubic modification were established. Using the Gibbs-Helmholtz equation, the entropy of the phase transition was also calculated and the comparative analysis of the obtained thermodynamic values of the studied compound with other argyrodite phases was carried out.