To the Explanation of the Magnetoplastic Effect in Diamagnetic and Paramagnetic Solids

Resumo

This work is devoted to the theoretical study of the magnetoplastic effect that manifests itself in the motion of dislocations in solids in the presence of a magnetic field without mechanical loading. An expression is obtained for the effective magnetic charge per unit length of dislocation, which occurs due to the action of the magnetic field on the dislocation. The effects associated with the induced magnetic charges at dislocations are studied. It is shown that the effective magnetic charge occurs due to the interaction between the magnetic field and only the edge components of dislocations. An expression for the force that acts on a dislocation in the magnetic field is derived and it is shown that in experiments on studying the motion of dislocations in the presence of magnetic fields the projection of this force onto the dislocation glide plane must play a dominant role.