Phase equilibria in the Ag2Se–GeSe2–SnSe2 system and thermodynamic properties of Ag8Ge1–xSnxSe6 solid solutions

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Alverdiev I., Bagheri S., Aliyeva Z., Yusibov Y. A., Babanlı M.

Inorganic Materials, vol.53, no.8, pp.786-796, 2017 (SCI-Expanded, Scopus)

• Nəşrin Növü: Article / Article
• Cild: 53 Say: 8
• Nəşr tarixi: 2017
• Doi nömrəsi: 10.1134/s0020168517080027
• jurnalın adı: Inorganic Materials
• Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Səhifə sayı: pp.786-796
• Açar sözlər: Ag2Se–GeSe2–SnSe2 system, liquidus surface, phase diagram, solid solutions, thermodynamic properties
• Açıq Arxiv Kolleksiyası: Məqalə
• Adres: Bəli

Qısa məlumat

The Ag2Se–GeSe2–SnSe2 system has been studied in the temperature range 290–430 K using differential thermal analysis, X-ray diffraction, and emf measurements concerning silver concentration cells with Ag4RbI5 as a solid electrolyte. We have constructed a number of vertical sections; the 300-, 800-, and 900-K isothermal sections of the phase diagram; and a projections of the liquidus surface. It has been shown that the only pseudobinary join, Ag8GeSe6–Ag8SnSe6, contains a continuous series of solid solutions between the two crystalline phases of the constituent selenides and divides the system into two independent subsystems. Ag2Se–Ag8GeSe6–Ag8SnSe6 is a univariant, eutectic subsystem, and GeSe2–Ag8GeSe6–Ag8SnSe6–SnSe2 is an invariant eutectic subsystem. Experimental emf data were used to evaluate partial thermodynamic functions of the silver in the high-temperature and low-temperature Ag8Ge1–xSnxSe6 solid solutions.