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

Author

Melkov, Gennadiy A. ; Kobljanskyj, Yuri V. ; Vasyuchka, Vitaliy I. ; Chumak, Andrii V. ; Slavin, Andrei N.

Author_Institution

Radiophys. Dept., Kiev Taras Shevchenko Nat. Univ., Ukraine

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

2814

Lastpage

2816

Abstract

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 T_d= 2.6 μs with insertion losses lower than 20 dB/μs.

Keywords

ferrites; signal processing; spin waves; YFe5O12; YIG; dipole-exchange spin waves; excitation interactions; ferrite films; microwave signal processing; parametric interactions; phase conjugation; signal delay time; two-magnon scattering; yttrium-iron garnet films; Delay effects; Delay lines; Ferrite films; Frequency; Garnets; Magnetic resonance; Scattering; Signal processing; Space vector pulse width modulation; Yttrium; Dipole-exchange spin waves; parametric interaction; phase conjugation; two-magnon scattering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.834207

Filename

1325651