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Effects of Al Content on Elastic Parameters of AlxGa1-xAs (0 ≤ x ≤ 1) Alloys

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Title Effects of Al Content on Elastic Parameters of AlxGa1-xAs (0 ≤ x ≤ 1) Alloys
 
Creator Ouchtati, A
Hadjoub, I
Doghmane, A
Khoualdia, A
Hadjoub, Z
 
Subject AlxGa1-xAs
Elastic parameters
Acoustic signature
Reflection coefficient
Acoustic microscopy
 
Description 131-137
Elastic parameters of AlxGa1-xAs (0 ≤ x ≤ 1) alloys are numerically determined and analyzed on the basis of scanning
acoustic microscopy technique. Thus, the dependence of Al concentrations, x, on all features of reflection coefficient and
acoustic materials signatures (critical angles of reflected modes, spatial periods, peaks of FFT spectra and their
corresponding wave velocities) has been considered, analyzed and discussed. It is found that as Al content increases several
behaviors are obtained: (i) all critical angles of longitudinal, transverse and Rayleigh waves, decrease, (ii) all spatial periods
increase and (ii) both Rayleigh and longitudinal wave velocities increase. Moreover, the variations of these parameters,
P, were quantified and semi-empirical formulas were found to be of the form: P = c + ax + bx2; from these formulas,
valuable information can be derived and may be useful for AlxGa1-xAs compositional characterization.
 
Date 2022-03-04T11:11:25Z
2022-03-04T11:11:25Z
2022-02
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/59299
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.60(02) [February 2022]