Numerical simulation of quasisurface magnetostatic waves in a ferrite film with two magnetic channels |
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Authors: | A Yu Annenkov S V Gerus S I Kovalev |
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Institution: | (1) Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Fryazino Branch, 141120 Fryazino, Moscow District, Russia |
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Abstract: | Quasisurface magnetostatic waves propagating in a ferrite film along two magnetized channels are simulated numerically. It
is shown that the interaction between the channels is manifested differently, depending on the wavelength. In the long-wavelength
region the interaction between the channels has a distributed character; in the short-wavelength region the interaction between
the channels appears as if it takes place at their boundary. The magnetized region of the ferrite film between the channels
behaves both as a conductor of the alternating field and as a medium with eigenmodes, so that under certain conditions the
waveguide can be transformed into a three-channel structure. The dispersion curves of the magnetostatic wave modes of a two-channel
waveguide lie in zones bounded by the dispersion curves of the corresponding modes of a one-channel waveguide of double width.
As the gap between the channels increases, the dispersion curves of the odd modes shift toward shorter wavelengths, and those
of the even modes shift toward longer wavelengths.
Zh. Tekh. Fiz. 68, 91–96 (February 1998) |
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