Abstract
The study of non-linear elasticity and elastic anisotropy in semiconducting crystals is a subject of great interest. Murnaghan’s finite deformation theory and elastic theory of Thurston and Brugger are used to study the elasticity in Aluminum Arsenide (AlAs). Elastic properties have direct link with specific heat, thermal expansion and Gruneisen parameters. The anharmonicity of Aluminum Arsenide (AlAs) crystal lattice are evaluated using the higher order elastic constants. Theoretical calculations from the thermodynamic and lattice dynamic points are useful in the study of the elastic and thermal properties of the semiconductor. The objective of this study is to investigate the higher order elastic constants, the low temperature limit of thermal expansion and the Gruneisen parameters of AlAs.
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