THE INFLUENCE OF TEMPERATURE ON PHONON PROCESSES IN CdGa2Se4
I.А. Mamedova1, A.A. Maksimov2, I.I. Tartakovskii2, F.M. Salehli3, N.А. Abdullayev1,4
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ABSTRACT

The temperature dependences of phonon frequencies (104 cm-1, 139 cm-1, and 187 cm-1) in CdGa2Se4 were studied. Raman scattering spectra in CdGa2Se4 crystals were measured with an accuracy of 0.1 cm-1 under excitation with a He-Ne laser with an emission wavelength of 632.817 nm. It was theoretically established that the change in phonon frequencies with temperature is described by exponential three-phonon interaction, and the experimental data well agree with calculations in the range of 5-175 K; above 180 K, linear dependence was observed.

Keywords: Raman scattering, phonon frequency, CdGa2Se4.
DOI:10.70784/azip.1.2025429

Received: 18.11.2025
Internet publishing: 28.11.2025    AJP Fizika E 2025 04 en p.29-30

AUTHORS & AFFILIATIONS

1. Institute of Physics of the Ministry of Science and Education of Azerbaijan, Baku, Azerbaijan
2. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
3. Department of Physics, Istanbul Technical University, Istanbul, Turkey.
4. Baku State University, Baku, Azerbaijan
E-mail: irada_mamedova@yahoo.com

Graphics and Images

        

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