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:
Jul. 11, 2000
Filed:
Oct. 24, 1997
Applicant:
Inventors:
Masahiro Kakehi, Kawasaki, JP;
Yuji Uehara, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428692 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 428900 ; 360113 ; 324252 ;
Abstract
A MR head employs a biasing soft magnetic film of a FeXN-based alloy which undergoes no change in the direction of its axis of easy magnetization even when subject to heat treatment. The MR head has an anisotropic magnetic field size of 10 Oe or greater, and electrical resistance p of 70 .mu..OMEGA.cm or greater, and a saturation flux density Bs of 1 T or greater. The direction of the axis of easy magnetization of the biasing soft magnetic film is oriented perpendicular to the direction of sense current, and the direction of the axis of easy magnetization of the MR film is oriented parallel to the sense current direction.