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:
May. 01, 2001
Filed:
May. 13, 1999
John David Westwood, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A shield and/or pole piece layer for a magnetoresistive (MR) head made of a high moment Fe—Al—N—O laminated film is disclosed. The Fe—Al—N—O laminated film is manufactured using N,O as the reactive gas, making a laminated film that has a high intrinsic anisotropic (H,) and can better withstand the processing fields employed during the various processing and annealing steps in the construction of the head. Accordingly, the magnetic domains of the first shield layer, the second shield layer and/or the pole piece layers do not change position from a desired parallel position to the ABS. By maintaining their parallel position, applied fields during the operation of the head, such as from the write head or the media, do not move the domain walls around to cause Barkhausen noise.