Study of transition kinetics of Se80Te20−xInx chalcogenide glasses
| Autor: | Ibrahim Hasan Afify, M. S. Abo-Ghazala, El-Sayed M. Farag, M. M. El-Zaidia |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Diffraction Materials science Annealing (metallurgy) Chalcogenide Kinetics General Physics and Astronomy Thermodynamics 01 natural sciences Amorphous solid law.invention chemistry.chemical_compound Differential scanning calorimetry Reaction rate constant chemistry law 0103 physical sciences Crystallization |
| Zdroj: | Indian Journal of Physics. 94:447-454 |
| ISSN: | 0974-9845 0973-1458 |
| DOI: | 10.1007/s12648-019-01479-7 |
| Popis: | Chalcogenide glasses with the chemical formula Se80Te20−xInx (x = 5, 10 and 15) were prepared using the melt quenching method. The amorphous nature of the prepared samples was checked by X-ray diffraction analysis. The thermal behavior was investigated by using differential scanning calorimetry at different heating rates, 5, 10, 15 and 20 °C/min. Lasocka relation was used to study the heating rate dependence of the glass and crystallization temperatures. Kissinger and Mahadevan models were used to determine the glass and crystallization activation energies. The time dependence of the ac conductivity at 1 kHz performed at different annealing temperatures, 75, 80, 85 and 90 °C, was used to calculate Avrami exponent. The frequency factor was determined from the temperature dependence of the rate constant. |
| Databáze: | OpenAIRE |
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