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:
Aug. 30, 2005
Filed:
Feb. 20, 2002
Hiroyuki Hoshiya, Odawara, JP;
Masahiko Hatatani, Odawara, JP;
Hisashi Kimura, Odawara, JP;
Hiroshi Ide, Kodaira, JP;
Hiroyuki Hoshiya, Odawara, JP;
Masahiko Hatatani, Odawara, JP;
Hisashi Kimura, Odawara, JP;
Hiroshi Ide, Kodaira, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To provide a spin-valve type magnetic head having high read output even if track width is narrow and high stability, a magnetic head according to the invention is provided with a spin-valve type magnetoresistive element in which a single magnetic domain turning ferromagnetic layer is formed on a soft magnetic free layer via a non-magnetic separating layer, the soft magnetic free layer and the single magnetic domain turning ferromagnetic layer are magnetostatically coupled at the end of track width, a closed magnetic circuit is formed and the soft magnetic layer has magnetization substantially induced in a direction substantially perpendicular to an external magnetic field.