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. 26, 2016
Filed:
Jan. 25, 2008
Masato Shiimoto, Kanagawa, JP;
Hiroyuki Katada, Kanagawa, JP;
Kazuhiro Nakamoto, Kanagawa, JP;
Hiroyuki Hoshiya, Kanagawa, JP;
Masato Shiimoto, Kanagawa, JP;
Hiroyuki Katada, Kanagawa, JP;
Kazuhiro Nakamoto, Kanagawa, JP;
Hiroyuki Hoshiya, Kanagawa, JP;
HGST Netherlands B.V., Amsterdam, NL;
Abstract
Embodiments of the present invention help to reduce mag-noise in a magnetoresistive head without deterioration in reproduced output and improve the signal/noise ratio (SNR) of the magnetoresistive head. According to one embodiment, the magnetoresistive head uses a synthetic ferri free layer and it is arranged such that the magnetic field which is applied to an end of a free layer with smaller film thickness and saturation magnetization in the track width direction by a coupling field is larger than the magnetic field which is applied to it by a bias layer.