A clear trend of E α = 5 × 10 4 decreasing with increasing Gd and Sc substitution is observed, matching the trend in the calculated bandgaps for varying Gd and Sc concentrations.
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Phase Diagrams and Piezoelectric Properties of Wurtzite Al<sub>1-x-y</sub>Sc<sub>x</sub>Gd<sub>y</sub>N Heterostructural Alloys.
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