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Microwave signal processing in ferrite films using dipole-exchange spin waves scattered on inhomogeneities

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5 Author(s)
Melkov, G.A. ; Radiophys. Dept., Kiev Taras Shevchenko Nat. Univ., Ukraine ; Kobljanskyj, Y.V. ; Vasyuchka, V.I. ; Chumak, A.V.
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An active nonlinear microwave signal processor based on the excitation and parametric interactions of short and slow dipole-exchange spin waves (DESW) propagating in ferrite (yttrium-iron garnet or YIG) films is proposed and realized. The short-wavelength DESW were excited as a result of scattering of an input long-wavelength dipolar spin wave pulse on defects and inhomogeneities in the YIG film. The best results were achieved in the YIG film sample of the thickness L=7.1 μm, where we obtained signal delay time of Td= 2.6 μs with insertion losses lower than 20 dB/μs.

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Magnetics, IEEE Transactions on  (Volume:40 ,  Issue: 4 )