Yermolenko I.P., Lebedev N.G. Dynamics of the Magnetization of a Single-Domain Deformed Soft Magnetic Ferromagnet

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https://doi.org/10.15688/mpcm.jvolsu.2020.2.7

Igor P. Yermolenko
Student, Department of Theoretical Physics and Wave Processes,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Nikolay G. Lebedev
Doctor of Physical and Mathematical Sciences, Professor,
Department of Theoretical Physics and Wave Processes,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Abstract. On the basis of the quantum model taking into account the Zeeman energy and the energy of the crystal field, dynamic equations of Landau — Lifshitz — Hilbert type for the magnetization of the deformed singledomain α-Fe crystal are obtained. The domain deformation is taken into account in the framework of a linear approximation. The equations of motion are solved numerically using the Adams — Multon, Rosenbrock, and RADAU5 methods. It is shown that for some values of the model parameters, the dependence of the magnetization on the strength of an external magnetic field has the characteristic form of a hysteresis loop. Qualitative agreement of the model dependence of the coercive force on the applied longitudinal pressure with similar experimental data for various steel grades Durehete 1055, AS1548746OR, X70, 11HN3D is obtained.

Key words: model Hamiltonian, Zeeman energy, crystal field, magnetic anisotropy, magnetization, hysteresis.

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Dynamics of the Magnetization of a Single-Domain Deformed Soft Magnetic Ferromagnet by Yermolenko I.P., Lebedev N.G. is licensed under a Creative Commons Attribution 4.0 International License.

Citation in English: Mathematical Physics and Computer Simulation. Vol. 23 No. 2 2020, pp. 82-90

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