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Uspekhi Fizicheskikh Nauk, 2018, Volume 188, Number 11, Pages 1155–1177
DOI: https://doi.org/10.3367/UFNr.2018.06.038350
(Mi ufn6101)
 

This article is cited in 7 scientific papers (total in 7 papers)

REVIEWS OF TOPICAL PROBLEMS

Nonequilibrium kinetics of the electron–phonon subsystem can give rise to electric- and magnetic-plasticity effects in crystals in alternating electric and/or magnetic fields

V. I. Karas'ab, V. I. Sokolenkoa

a National Scientific Center 'Kharkiv Institute of Physics and Technology', National Academy of Sciences of Ukraine
b V. N. Karazin Kharkiv National University
References:
Abstract: Kinetic processes in magnetic crystals in an alternating magnetic field and/or a pulsed electric field are studied theoretically, experimentally, and numerically to establish the prime mechanisms by which they influence the structure and the mechanical, dissipative, and magnetic characteristics of crystals. The specific materials studied are severly strained ferritic pearlite steel 15Kh2NMFA and nickel. The paper presents a systematic kinetic analysis of the nonequilibrium dynamics of the electron–phonon subsystem of a magnetic crystal in an electric field. Our proposed method that underlies the analysis solves the system of Boltzmann equations for the electron and phonon distribution functions numerically without expanding the electron distribution function in a power series of the phonon energy. It is shown that an electronic subsystem excited by an electric field transfers energy to the phonon subsystem and thereby massively produces short-wave phonons which act strongly on lattice defects (such as point and linear ones and phase boundaries) and thus redistribute and decrease their density, as well as providing damage healing, decreasing local peak stresses, and reducing the degradation level of construction materials properties. It is found that, under the action of an induction electric field, the electron distribution function becomes nonequilibrium near the Fermi level energy and, as a result of electron–phonon collisions, transfers significant energy to the phonon subsystem, resulting in forming a nonequilibrium phonon distribution function. Based on modified Granato–L$\ddot {\rm u}$cke and Landau–Gofman models, it is shown, using the calculated phonon distribution function, that the action of phonons on dislocations is much stronger than it would be in the case of thermodynamic equilibrium at the experimentally measured sample heating by 12 K.
Received: August 10, 2017
Revised: May 3, 2018
Accepted: June 6, 2018
English version:
Physics–Uspekhi, 2018, Volume 61, Issue 11, Pages 1051–1071
DOI: https://doi.org/10.3367/UFNe.2018.06.038350
Bibliographic databases:
Document Type: Article
PACS: 61.72.Ff, 61.72.Hh, 62.20.Hg, 63.20.kd, 63.20.kp, 75.80.+q, 83.60.Np
Language: Russian
Citation: V. I. Karas', V. I. Sokolenko, “Nonequilibrium kinetics of the electron–phonon subsystem can give rise to electric- and magnetic-plasticity effects in crystals in alternating electric and/or magnetic fields”, UFN, 188:11 (2018), 1155–1177; Phys. Usp., 61:11 (2018), 1051–1071
Citation in format AMSBIB
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\by V.~I.~Karas', V.~I.~Sokolenko
\paper Nonequilibrium kinetics of the electron--phonon subsystem can give rise to electric- and magnetic-plasticity effects in crystals in alternating electric and/or magnetic fields
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\vol 188
\issue 11
\pages 1155--1177
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\crossref{https://doi.org/10.3367/UFNr.2018.06.038350}
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\jour Phys. Usp.
\yr 2018
\vol 61
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\pages 1051--1071
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  • This publication is cited in the following 7 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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