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This article is cited in 31 scientific papers (total in 31 papers)
METHODOLOGICAL NOTES
Dislocation kinetics in nonmagnetic crystals: a look through a magnetic window
V. I. Alshitsa, E. V. Darinskayaa, M. V. Koldaevaa, R. K. Kotowskib, E. A. Petrzhika, P. Tronczykb a Shubnikov Institute of Cristallography of Federal Scientific Research Center "Crystallography and Photonics", Russian Academy of Sciences, Moscow
b Polish-Japanese Academy of Information Technology, Warsaw
Abstract:
We discuss new kinematic magnetoplasticity features established experimentally and by simulations. We examine the motion of a dislocation through randomly distributed point defects under the influence of a magnetic field that reduces the impurity pinning forces. In addition to the measurable characteristics of motion, hidden motion parameters amenable only to simulation studies are investigated for the first time. It is shown that the distribution of stoppers on a dislocation is independent of the impurity concentration $C$, whereas the average number of stoppers and the critical force for the dislocation breakaway are proportional to $\sqrt {C}$. A model is proposed that for the first time explains the observed concentration dependence of the average dislocation speed in a magnetic field, $v\propto 1/\sqrt {C}$. The model suggests that there is hidden room for an orders-of-magnitude increase in $v$, something which was already realized in NaCl crystals additionally subjected to a weak electric field.
Received: June 20, 2016 Accepted: July 28, 2016
Citation:
V. I. Alshits, E. V. Darinskaya, M. V. Koldaeva, R. K. Kotowski, E. A. Petrzhik, P. Tronczyk, “Dislocation kinetics in nonmagnetic crystals: a look through a magnetic window”, UFN, 187:3 (2017), 327–341; Phys. Usp., 60:3 (2017), 305–318
Linking options:
https://www.mathnet.ru/eng/ufn5722 https://www.mathnet.ru/eng/ufn/v187/i3/p327
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