Thin film chip of magnetic oxide garnet and magnetostatic surfac

Details Thin film chip of magnetic oxide garnet and magnetostatic surfac Thin film chip of magnetic oxide garnet and magnetostatic surfac

1996-07-31

1998-09-15

Pascal, Robert J.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

H01P 1215

Patent

active

058085254

ABSTRACT:
Proposed is an improvement in a magnetostatic surface wave device such as an S/N enhancer comprising a thin film chip of a magnetic oxide garnet, e.g., gallium-substituted YIG epitaxially grown on the surface of a substrate, e.g., GGG, to which a magnetic field is applied within the plane of the thin film. The low-pass cut-off frequency of the microwaves can be decreased to 400 MHz or lower and the half-value width of magnetic resonance .DELTA.H can be small enough when the principal plane of the thin film of the magnetic oxide garnet is the (110) plane and the magnetic field applied thereto is in such a direction that the angle between the direction of the magnetic field and the direction of the <100> axis of the thin film within the (110) plane is in the range from .+-.27.degree. to .+-.33.degree..

REFERENCES:
patent: 4555683 (1985-11-01), Sorger et al.
patent: 5601935 (1997-02-01), Fujino et al.

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