Acoustic technique application in determining structure and dislocation-point defect force interaction parameters

It is shown that absolute values of the structure and force parameters peculiar to the system “dislocation-point defects” in crystals with low Peierls energy barrier can be estimated by the data of the acoustic study of the dislocation amplitude-dependent internal friction and yield point measurements. The results of the problem solved are illustrated by the experimental data obtained on aluminium single crystal specimens a t temperatures varied from room temperature down to 4.2 K.