The effect of a high hydrostatic pressure on the dislocation dipole vibration frequency and the forces of dynamic drag of dislocations by dislocation dipoles and of dislocation pairs by pinned dislocations was studied. Analytical expressions were obtained for the force of dynamic drag of mobile dislocation pairs by pinned dislocations and for the force of drag of isolated dislocations by dislocation dipoles in hydrostatically compressed crystals. Hydrostatic compression led to a significant increase in these forces. This effect was most pronounced in alkali-halide crystals, where the drag force increased by a factor of 1.5 to 2.0.

Effect of a High Hydrostatic Pressure on the Dynamic Instability of Dislocation Motion. V.V.Malashenko: Technical Physics, 2011, 56[9], 1287-90