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Interaction of a shear wave with a moving domain wall in a ferromagnetic crystal with allowance for the external magnetic field

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Abstract

The boundary-value problem of the magnetoelastic wave interaction with a moving domain wall in a ferromagnetic crystal is solved in the nonexchange magnetostatic approximation with allowance for the external magnetic field. It is shown that the difference introduced by magnetic field between the ferromagnetic resonance frequencies of the domains does not cause any noticeably departure of the refraction characteristics of reflected and transmitted waves from those observed at zero frequency mismatch. By contrast, the magnitudes of the transmission and reflection coefficients strongly depend on the external magnetic field and on the mobility of the domain wall. The dependence of the magnitude of the reflection coefficient on the external magnetic field at a fixed angle of shear wave incidence is found to possess two ferromagnetic resonance peaks. The positions and heights of the peaks may vary depending on the mobility of the domain wall.

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Authors and Affiliations

  1. Institute of Radio Engineering and Electronics, Ul’yanovsk Branch, Russian Academy of Sciences, ul. Goncharova 48, Ul’yanovsk, 432700, Russia

    E. A. Vilkov

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  1. E. A. Vilkov
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__________

Translated from Akusticheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 51, No. 5, 2005, pp. 614–622.

Original Russian Text Copyright © 2005 by Vilkov.

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Vilkov, E.A. Interaction of a shear wave with a moving domain wall in a ferromagnetic crystal with allowance for the external magnetic field. Acoust. Phys. 51, 524–532 (2005). https://doi.org/10.1134/1.2042570

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  • DOI: https://doi.org/10.1134/1.2042570

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