Pressure and temperature derivatives of the elastic moduli of some polycrystalline semiconducting compounds using single-crystal third-order elastic constant data and the elastic-constant pressure derivatives

The pressure and the temperature derivatives of the bulk, shear, and Young's moduli and of the Poisson's ratio of some 3-5 and 2-6 polycrystalline semiconducting compounds have been calculated from Hill's approximation. The third-order elastic constants and the pressure derivatives of the second-order elastic constants of the corresponding single-crystal compounds have been employed in these calculations. Since the single-crystal input data are experimental, we would expect the present polycrystalline calculations to correspond to experimental measurements.