Eur. Phys. J. B (2018) 91: 44
https://doi.org/10.1140/epjb/e2018-80540-0

Regular Article

Investigation of elastic moduli and constants of zinc-blende Al_yGa_1-yAs alloy by statistical moment method

¹ VNU University of Education, 144 Xuan Thuy, Hanoi, Vietnam
² Duy Tan University, K7/25 Quang Trung, Danang, Vietnam
³ Hanoi National University of Education, 136 Xuan Thuy, Hanoi, Vietnam
⁴ Military College of Tank Armour Officer, Vinhphuc, Vietnam

^a e-mail: hieuhk@duytan.edu.vn

Received: 23 September 2017
Received in final form: 19 December 2017
Published online: 19 February 2018

Abstract

The elastic moduli and elastic constants of the ternary semiconductor alloy Al_yGa_1-yAs at finite temperature have been investigated using the statistical moment method. The Young, shear, bulk moduli and elastic constants C₁₁, C₁₂, C₄₄ of the zinc-blende Al_yGa_1−yAs crystal are calculated as functions of Al composition and temperature. Numerical calculations have been performed and compared with those of the experimental and other theoretical results showing the reasonable agreements. Our study shows that elastic moduli and C₁₁, C₁₂ constants of zinc-blende Al_yGa_1−yAs alloy are decreasing functions of the temperature and Al composition; C₄₄ constant is a decreasing function of the Al composition.