Superdirected beam of the backward volume spin wave
Kotel’nikov Institute of Radio Engineering and Electronics of RAS (Fryazino branch), 141190 Vvedensky sq.1, Fryazino, Moscow region, Russia
* Corresponding author : firstname.lastname@example.org
Published online: 4 July 2018
Visualized patterns of the backward volume spin wave (BVSW) excited by arbitrarily oriented linear transducer in tangentially magnetized ferrite film are investigated experimentally in the plane of ferrite film for the case where the transducer length D is much larger than the wavelength λ0. Superdirected BVSW beam having zero angular width and minimal smearing of the beam energy along the film surface is observed experimentally. Thus, it is proved that such phenomenon as “superdirected propagation of the wave” exists in the nature.
© The Authors, published by EDP Sciences, 2018
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