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M. A. ABID1,* , H. ABU HASSAN1, S. S. NG1
Pseudo unit cell (PUC) model was applied to investigate the phonons frequency, mode number, static dielectric constant and high frequency dielectric constant of AlxGa1-xN mixed crystals. The theoretical results were compared with experimental results obtained using Raman and Fourier transform infrared spectroscopy on samples with different mole fraction (0 ≤ x ≤ 1) grown on c-plane (0001) sapphire substrates. Theoretical results indicated that the AlxGa1-xN had only one-mode of vibration for A1(LO) and classified as two-mode behavior for small Al composition range in agreement with the experimental results which revealed a two-mode behavior for the E1(TO)..
AlxGa1-xN, PUC, Phonon, Raman, FTIR, Pseudo unit cell (PUC) model.
M. A. ABID, H. ABU HASSAN, S. S. NG, Theoretical and experimental investigations of zonecenter optical phonons in wurtzite AlxGa1-x N using pseudo unit cell model, Optoelectronics and Advanced Materials - Rapid Communications, 4, 5, May 2010, pp.693-698 (2010).
Submitted at: April 6, 2010
Accepted at: May 20, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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