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:
Dec. 01, 1998
Filed:
Dec. 17, 1996
Applicant:
Inventors:
Hiroyuki Hoshiya, Hitachi, JP;
Yoshihiro Hamakawa, Urawa, JP;
Susumu Soeya, Hitachi, JP;
Shigeru Tadokoro, Odawara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428692 ; 428611 ; 428622 ; 428627 ; 428629 ; 428632 ; 428639 ; 428641 ; 428660 ; 428667 ; 428670 ; 428678 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 428900 ; 360113 ; 324252 ;
Abstract
A ferromagnetic and antiferromagnetic material having a high exchange coupling and a high thermal stability, and a magnetic storage system using this material which has excellent reliability and recording density, and a magnetoresistive storage/read separation head having a high sensitivity and a low noise property. The magnetic storage/read system of the invention mounts a magnetoresistive head using a chromium-manganese antiferromagnetic layer/a cobalt alloy layer as a pinning layer or the longitudinal bias layer of the spin-valve type magnetoresistive layered film.