Computational study of lattice dynamics and mechanical properties of Al x In 1-x P y Sb z As 1-y-z /InP under the effect of composition

For the first time, the composition dependence of pentanary AlInPSbAs alloy is described. The effect of composition on the polarity ( ∝ p ) , mechanical parameters have been calculated for the Al x In 1-x P y Sb z As 1-y-z alloy. The impact of composition on the internal strain parameter ( ζ ) , bon...

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Bibliographic Details
Published in:Physica scripta 2024-06, Vol.99 (6), p.65701
Main Authors: Alyami, Mohammed, Alfrnwani, O A, Othman, Mazin Sh, Elkenany, Elkenany B
Format: Article
Language:English
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Summary:For the first time, the composition dependence of pentanary AlInPSbAs alloy is described. The effect of composition on the polarity ( ∝ p ) , mechanical parameters have been calculated for the Al x In 1-x P y Sb z As 1-y-z alloy. The impact of composition on the internal strain parameter ( ζ ) , bond-bending force constant ( α ), bond-stretching force constant ( β ), and sound velocity (v) has been reported. Results from experiments and the investigated properties of the new alloy show a high degree of agreement. In this work, the density function theory (DFT) and the empirical pseudo-potential approach (EPM) with the virtual crystal approximation (VCA) have been used. The outcomes are expected to be used in optoelectronic applications and in understanding the mechanical properties of Al x In 1-x P y Sb z As 1-y-z alloy.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/ad46ce