Influence of mechanical deformations on the irreversible Bloch‐wall jumps in electrolytic nickel

Experimental results are presented of the influence of small static torsional deformations on the magnetomechanical damping in electrolytic nickel as a function of surface shear strain amplitude. The peak which appears in the undeformed state decreases and shifted towards higher amplitudes as a result of the deformation. Simultaneously, the peak becomes flatter, i.e., the magnetomechanical damping tends towards a constant value, which is interpreted as a limitation of the number of the irreversible Bloch‐wall jumps. These results are interpreted theoretically and the expression of the magnetomechanical damping as a function of the shear strain amplitude is established, including the effect of the deformation. A good correspondence between the theoretical and experimental results is found.