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:
Jan. 15, 1980
Filed:
Oct. 03, 1977
Applicant:
Inventors:
Norio Ota, Kokubunji, JP;
Fumihiko Ishida, Hachioji, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01N / ;
U.S. Cl.
CPC ...
428336 ; 156605 ; 156606 ; 252 6257 ; 252 6258 ; 252 6259 ; 252 626 ; 252 6262 ; 252 6263 ; 428539 ; 428900 ;
Abstract
A garnet single crystal film wherein part of iron ions at tetrahedral positions and octahedral positions are replaced by an appointed amount of the other ions is by far superior to prior art garnet films in that its saturation magnetization (4.pi.Ms) and its exchange stiffness coefficient (A) can be independently controlled to a desired value and a magnetic bubble domain having a small diameter can be easily formed.