Hardening of CdZnTe by acoustic wave treatment

Indentation experiments on monocrystalline {111} Cd 0.96 Zn 0.04 Te samples showed that acoustic wave treatment (AWT) before indentation resulted in crystal hardening. The mechanism causing this effect is still not well understood. However, dislocation motion could be hindered owing to the Cottrell matrix effect due to point defects liberated by AWT. Hardening was found to override softening due to AWT-induced dislocation motion.