Solid-phase equilibria in the FeS-In2S3-S system, thermodynamic properties of the FеIn2S4 compound and (FeS)1-x(In2S3)x solid solutions

Mammadov F., Babanly D., İMAMƏLİYEVA S., Zeynalova G., Ahmadov E., Babanlı M.

Journal of Chemical Thermodynamics, vol.213, 2026 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 213
  • Nəşr tarixi: 2026
  • Doi nömrəsi: 10.1016/j.jct.2025.107585
  • jurnalın adı: Journal of Chemical Thermodynamics
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Açar sözlər: EMF method, iron‑indium sulfides, magnetic materials, phase diagram, solid solutions, thermodynamic functions
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

In this paper, the results of a comprehensive study of solid-phase equilibria in the FeS-In2S3-S system and thermodynamic properties of intermediate phases using DTA, XRD, and EMF methods are presented. Based on the experimental results and literature data, the character of solid-phase equilibria in the Fe-In-S system in the FeS-In2S3-S composition range is established. From the EMF measurements of the concentration cells of the type (−) FeS(solid) | glycerol + KCl + FeCl2 | (Fe in alloy) (+) in the 300–390 K temperature interval, the relative partial thermodynamic functions of FeS and Fe in alloys were determined. By integrating the Gibbs-Duhem equation from the obtained partial molar quantities of iron, using the thermodynamic data for In2S3, the standard Gibbs free energy of formation and the enthalpy of formation, as well as the standard entropy of the FeIn2S4 compound and solid solutions (FeS)1-x(In2S3)x (x = 0.6; 0.8; 0.9) were calculated.