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Diffraction of a Backward Volume Spin Wave on a Through Hole in a Ferrite Plate

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Diffraction of a backward volume spin wave on a through hole in a ferrite plate is investigated experimentally and theoretically for when the length of the spin wave is greater than the diameter of the hole and the linear transducer exciting the wave is perpendicular to an external uniform magnetic field. It is found that in one direction of the possible super-directional propagation of the wave, a distinct shadow of the hole is observed at a considerable distance from the latter. Good agreement between the experimental and theoretical results is obtained.

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Notes

  1. Including cases where transducers of different shapes were used or different inhomogeneities (e.g., a grid of conductive strips or etched grooves) were placed between them.

  2. It should be noted that, in the YIG film with holes, the BVSWs were excited less efficiently than the surface SWs; therefore, the experiments were only successful for the initial part of the BVSW spectrum.

  3. Relative angular beam width σ shows how many times the absolute angular width of a beam in an anisotropic medium is larger or smaller than the width of a similar beam (with the same λ0/D ratio) in an isotropic medium (for more about the σ value, see [8, 18]).

  4. The existence of cutoff angles for the BVSWs was recently proven in [9, 11], where formulas for calculating them were proposed.

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Funding

This work was performed as part of a State Task for the Kotelnikov Institute of Radio Engineering and Electronics. It was supported by the Russian Foundation for Basic Research, project no. 20-07-00356.

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Authors and Affiliations

  1. Kotelnikov Institute of Radio Engineering and Electronics (Fryazino Branch), Russian Academy of Sciences, 141190, Fryazino, Moscow oblast, Russia

    S. V. Gerus, E. H. Lock & A. Yu. Annenkov

  2. Saratov National Research State University, 410012, Saratov, Russia

    A. B. Khutieva & A. V. Sadovnikov

Authors
  1. S. V. Gerus
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  2. E. H. Lock
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  3. A. Yu. Annenkov
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  4. A. B. Khutieva
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  5. A. V. Sadovnikov
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Corresponding author

Correspondence to S. V. Gerus.

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The authors declare that they have no conflicts of interest.

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Translated by E. Bondareva

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Gerus, S.V., Lock, E.H., Annenkov, A.Y. et al. Diffraction of a Backward Volume Spin Wave on a Through Hole in a Ferrite Plate. Bull. Russ. Acad. Sci. Phys. 86, 1361–1365 (2022). https://doi.org/10.3103/S1062873822110120

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  • DOI: https://doi.org/10.3103/S1062873822110120

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