Thermoabsorption of sbsi near the ferroelectric-paraelectric phase transition
| Autor: | M. Grandolfo, F. Somma, V. Angelini, Sh. M. Efendiev, P. Vecchia, Mauro Casalboni |
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| Rok vydání: | 1981 |
| Předmět: |
Phase transition
Materials science Absorption spectroscopy Condensed matter physics Band gap Settore ING-IND/22 - Scienza e Tecnologia dei Materiali Dielectric Condensed Matter Physics Ferroelectricity Settore FIS/03 - Fisica della Materia Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Amplitude Modulation Modulation spectrum |
| Zdroj: | Ferroelectrics. 34:231-234 |
| ISSN: | 1563-5112 0015-0193 |
| Popis: | Temperature-modulated absorption spectra of SbSI near the ferroelectric-paraelectric phase transition are reported. The experiment was performed using unpolarized light. The modulation technique allows a more precise and univocal determination of the energy gap E o and its temperature dependence, which has been evaluated by means of a phenomenological interpretation of the experimental lineshapes. A direct explanation is also provided for the already known typical dependence on temperature of the amplitude of modulation spectra at band gap energy. |
| Databáze: | OpenAIRE |
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