Abstract
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.
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Acknowledgments
The author thanks Assoc. Prof. P.I. Pronin for multiple discussions and useful advices, the researchers of the Chair of Theoretical Physics and the participants of the Workshop of the Chair of Molecular Processes and Extreme Matter States of the Department of Physics of Moscow State University for discussions of the issues mentioned here, and Prof. A.V. Borisov for the valuable comments which allowed improving the presentation of the results.
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Russian Text © The Author(s), 2019, published in Vestnik Moskovskogo Universiteta, Seriya 3: Fizika, Astronomiya, 2019, No. 5, pp. 34–39.
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Smirnov, N.E. To the Explanation of the Magnetoplastic Effect in Diamagnetic and Paramagnetic Solids. Moscow Univ. Phys. 74, 453–458 (2019). https://doi.org/10.3103/S0027134919050163
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DOI: https://doi.org/10.3103/S0027134919050163