The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 1997
Filed:
Sep. 07, 1994
Applicant:
Inventors:
Masaru Fujino, Kyoto, JP;
Takashi Fujii, Kyoto, JP;
Makoto Kumatoriya, Kyoto, JP;
Takenori Sekijima, Kyoto, JP;
Hiroshi Takagi, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428692 ; 428693 ; 4286 / ; 4286 / ; 428701 ; 428700 ; 428900 ; 252 / ; 252 6256 ; 252 6257 ; 333134 ; 333147 ; 333148 ; 333150 ; 333156 ; 333193 ; 333201 ; 359280 ; 359282 ; 385-1 ; 385-6 ; 385130 ;
Abstract
A surface magnetostatic wave device includes an Fe-containing garnet single crystal film grown on a gadolinium gallium garnet substrate. The crystallographic plane azimuth of the gadolinium gallium garnet substrate can be one of a (110) plane, a (100) plane, and a (211) plane. The device achieves both a reduced saturation magnetization and a reduced anisotropic magnetic field to thereby minimize the lowest frequency in the propagation band.