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. 03, 2004
Filed:
Mar. 14, 2002
Applicant:
Inventor:
Michael K. Minor, Gibsonia, PA (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/147 ;
U.S. Cl.
CPC ...
G11B 5/147 ;
Abstract
A perpendicular magnetic recording head includes a laminated main write pole and a return pole magnetically coupled to the main write pole. The main write pole includes a first magnetic layer having a high saturation magnetization, a second magnetic layer having a high saturation magnetization, and a non-magnetic interlayer positioned between the first magnetic layer and the second magnetic layer. The first and second magnetic layers may comprise, for example, Fe Co , wherein 40≦x≦90 and 10≦y≦60.