Phase Equilibria and Thermodynamics of Selected Compounds in the Ag–Fe–Sn–S System
| Autor: | M. V. Moroz, Oleksandr Reshetnyak, Pavlo Demchenko, Leena Hupa, Daniel Lindberg, Fiseha Tesfaye, M. V. Prokhorenko |
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| Rok vydání: | 2018 |
| Předmět: |
S system
Phase transition Materials science Electromotive force Solid-state physics Thermodynamics 02 engineering and technology Magnetic semiconductor 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Calculation methods 0104 chemical sciences Electronic Optical and Magnetic Materials Phase (matter) Materials Chemistry Thermal stability Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Journal of Electronic Materials. 47:5433-5442 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-018-6430-3 |
| Popis: | Polythermal sections in the vicinity of the quaternary compounds Ag2FeSnS4 and Ag2FeSn3S8 have been modeled. The mechanism of formation of these quaternary compounds and their thermal stability have been investigated. Measurements of electromotive force allowed calculations of the standard thermodynamic functions ΔG°, ΔH°, and S° of the Ag2FeSnS4 and Ag2FeSn3S8 compounds. Based on calorimetric measurements, the enthalpies of phase transitions of the selected compounds were determined. Furthermore, the heat capacities of both quaternary compounds were estimated by applying different calculation methods. Thermodynamic properties of the quaternary compounds, which are regarded as functional magnetic materials, were analyzed and are discussed in detail. |
| Databáze: | OpenAIRE |
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