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:
Feb. 12, 2013
Filed:
Nov. 08, 2010
Kan Yasui, Kodaira, JP;
Nobuo Yoshida, Hiratsuka, JP;
Katsuro Watanabe, Hitachiohta, JP;
Norihiro Okawa, Odawara, JP;
Kan Yasui, Kodaira, JP;
Nobuo Yoshida, Hiratsuka, JP;
Katsuro Watanabe, Hitachiohta, JP;
Norihiro Okawa, Odawara, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
According to one embodiment, a method for producing a magnetic head includes depositing a first film above a substrate, etching a pattern into the first film, depositing a second film on the etched portion of the first film, and depositing a third film above the first and second film to form a multilayer magnetic film, wherein the second film is embedded between the first and third film in a portion of the first film that is removed. In another embodiment, a differential magnetic read head includes a magnetic multilayer film comprising a stack of a first magnetic sensor film and a second magnetic sensor film which are not magnetically connected and a hard magnetic film provided on both sides in a track width direction of the magnetic multilayer film for controlling a magnetic domain of the magnetic multilayer film. The hard magnetic film is a laminated structure as described above.