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Ferromagnetic Resonance and Elastic Vibrations in Epitaxial Yttrium Iron Garnet Films

  • ORDER, DISORDER, AND PHASE TRANSITION IN CONDENSED SYSTEM
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Abstract

The ferromagnetic resonance (FMR) spectra of epitaxial yttrium iron garnet films are experimentally studied. The field dependences of the FR frequency are used to determine the effective fields induced by the first and second anisotropy constants and the effective uniaxial anisotropy field. The FMR frequency and linewidth are found to increase in the fields lower than 8 Oe applied in the bismuth-containing film plane. This increase is related to the formation of a nonuniform magnetization distribution, which is supported by a direct magnetooptical observation. The FMR spectra are found to be modulated by a set of narrow lines, the amplitude of which is proportional to the FMR signal intensity. The frequency position of the lines is independent of the magnitude and direction of a dc magnetic field. This modulation is shown to be associated with the resonance excitation of transverse elastic vibration modes. The effective magnetoelastic coupling parameter and the linewidth of the elastic vibrations excited by resonance pumping are estimated.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 18-29-02120.

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Authors and Affiliations

  1. Vernadsky Crimean Federal University, 295007, Simferopol, Russia

    S. N. Polulyakh, V. N. Berzhanskii, E. Yu. Semuk, V. I. Belotelov, P. M. Vetoshko, V. V. Popov, A. N. Shaposhnikov, A. G. Shumilov & A. I. Chernov

  2. Russian Quantum Center, 121205, Moscow, Russia

    V. I. Belotelov, P. M. Vetoshko & A. I. Chernov

  3. Moscow State University, 119991, Moscow, Russia

    V. I. Belotelov

  4. Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 125009, Moscow, Russia

    P. M. Vetoshko

Authors
  1. S. N. Polulyakh
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  2. V. N. Berzhanskii
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  3. E. Yu. Semuk
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  4. V. I. Belotelov
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  5. P. M. Vetoshko
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  6. V. V. Popov
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  7. A. N. Shaposhnikov
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  8. A. G. Shumilov
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  9. A. I. Chernov
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Corresponding author

Correspondence to S. N. Polulyakh.

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Translated by K. Shakhlevich

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Polulyakh, S.N., Berzhanskii, V.N., Semuk, E.Y. et al. Ferromagnetic Resonance and Elastic Vibrations in Epitaxial Yttrium Iron Garnet Films. J. Exp. Theor. Phys. 132, 257–263 (2021). https://doi.org/10.1134/S1063776121020035

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  • DOI: https://doi.org/10.1134/S1063776121020035

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