Effect of Gyrotropy on Electromagnetic Wave Transformation into Spin Wave in the Vicinity of Antiresonance Frequencies

Issues » Volume 42, Issue 6

D. I. Sirota, E. Iu. Kraiushkina

Bryansk State Technical University, 7 50 Let Octiabrya Blvd., 241035 Briansk, Russia

Received: 18.10.2019; final version - 12.02.2020. Download: PDF

The effect of different contributions of gyrotropy to the excitation of spin waves by electromagnetic one at antiresonance frequencies near the orientation phase transition in an inhomogeneous plane-layered medium is shown. The singular behaviour in the amplitude of electromagnetic and magnetic oscillations on the coordinate is studied. The connection between the resonant absorption of electromagnetic wave energy near the singularity and the energy flow in the direction of inhomogeneity is revealed. Resonant absorption of electromagnetic energy near the singularity is connected with the excitation of spin oscillations, which eliminate divergence by activating the propagation of the spin wave, when its dispersion is taken into account in the magnetic susceptibility tensor. For a visual demonstration of the phenomena under consideration, the graphs with the results of numerical calculations are presented.

Key words: spin waves, orientation phase transition, plane-layered medium, electromagnetic wave, singularity.

URL: http://mfint.imp.kiev.ua/en/abstract/v42/i06/0767.html

DOI: https://doi.org/10.15407/mfint.42.06.0767

PACS: 75.30.Ds, 75.30.Kz, 75.50.-y, 75.60.-d, 75.70.-i, 76.20.+q

Citation: D. I. Sirota and E. Iu. Kraiushkina, Effect of Gyrotropy on Electromagnetic Wave Transformation into Spin Wave in the Vicinity of Antiresonance Frequencies, Metallofiz. Noveishie Tekhnol., 42, No. 6: 767—780 (2020) (in Russian)

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