FEATURES OF ELASTIC ANISOTROPY OF GALLIUM ARSENIDE AND PHOSPHIDE CRYSTALS.

Abstract

Abstract: The velocity and attenuation coefficient of acoustic waves with frequencies of 30–420 MHz in cubic crystals of gallium arsenide and phosphide along the crystallographic axes [100] and [110] were determined. Based on experimental data, the elastic anisotropy parameters of these crystals were determined for the first time simultaneously, both for real and imaginary elastic moduli. It is shown that the proposed approach is useful for predicting the general nature of the attenuation anisotropy of acoustic waves in crystals of cubic symmetry.