CALORIMETRIC STUDY OF PHASE TRANSITION OF Cu8GeSe6 AND COMPARISON WITH OTHER ARGYRODITE FAMILY COMPOUNDS Cu8GeSe6 BİRLƏŞMƏSİNİN FAZA KEÇİDİNİN KALORİMETRİK TƏDQİQİ VƏ ARQİRODİT AİLƏSİNİN DİGƏR BİRLƏŞMƏLƏRİ İLƏ MÜQAYİSƏSİ КАЛОРИМЕТРИЧЕСКОЕ ИССЛЕДОВАНИЕ ФАЗОВОГО ПЕРЕХОДА Cu8GeSe6 И СРАВНЕНИЕ С ДРУГИМИ СОЕДИНЕНИЯМИ СЕМЕЙСТВА АРГИРОДИТА

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Bayramova U., Ahmadov E., Babanly D., Mashadiyeva L., Babanlı M.

Chemical Problems, vol.21, no.4, pp.396-403, 2023 (Scopus)

• Nəşrin Növü: Article / Article
• Cild: 21 Say: 4
• Nəşr tarixi: 2023
• Doi nömrəsi: 10.32737/2221-8688-2023-4-396-403
• jurnalın adı: Chemical Problems
• Jurnalın baxıldığı indekslər: Scopus, Academic Search Premier
• Səhifə sayı: pp.396-403
• Açar sözlər: copper-germanium selenide, differential scanning calorimetry, phase transition, thermodunamic functions
• Açıq Arxiv Kolleksiyası: Məqalə
• Adres: Bəli

Qısa məlumat

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.