Magnetostatic wave device

Details Magnetostatic wave device Magnetostatic wave device

1998-04-01

2000-04-18

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333 241, 3332192, 428693, 252 6257, H01P 1215, H01F 1024

Patent

active

060520426

ABSTRACT:
The magnetostatic wave device comprises a single crystal substrate made of Gd.sub.3 Ga.sub.5 O.sub.12, a magnetic garnet single crystal film provided on the single crystal substrate and at least one transducer provided on the magnetic garnet single crystal film. The magnetic garnet single crystal film has {111} plane and is made of a material expressed by the formula (YR.sub.1).sub.3 (FeR.sub.2).sub.5 O.sub.12, where R.sub.1 is at least one element selected from La, Bi, Lu and Gd, R.sub.2 is at least one element selected from Ga, Al, In and Sc and Y and Fe are the main components with respect to R.sub.1 and R.sub.2. In the magnetostatic wave device, a DC magnetic field is applied to the magnetic garnet single crystal film so that a magnetostatic surface wave propagates on the magnetic garnet single crystal film in a direction of <110> axis on {111} plane of the magnetic garnet single crystal film.

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Database Inspec; Institute of Electrical Engineers, Stevenage, GB; Inspec No. 2975081; Beregov A.S., et al.; "Determination of the Parameters of Yttrium-iron Garnet Epitaxial Films" & Izvestiya Vysshikh Uchebnykh Zavedenii, Radioelektronika, 1986; Ukrainian SSR, USSR, vol. 29, No. 7, ISSN 0021-3470; pp. 32-36.
Database Inspec; Institute of Electrical Engineers, Stevenage, GB; Inspec No. 4029709; Zil'berman P.E., et al.; "Nonlinear Effects in the Propagation of Surface Magnetostatic Waves in Yttrium Iron Garnet films in Weak Magnetic Fields" & Zhurnal Eksperimental'Noi I Toereticheskoi Fiziki, May 1991, USSR; vol. 99, No. 5, ISSN 0044-4510; abstract.

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