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:
Oct. 08, 2002
Filed:
Nov. 18, 1999
Anthony M. Mack, Minneapolis, MN (US);
Sining Mao, Savage, MN (US);
Michael A. Seigler, Bridgeville, PA (US);
Nurul Amin, Burnsville, MN (US);
Taras G. Pokhil, Arden Hills, MN (US);
Ananth Naman, Edina, MN (US);
Jin Li, Bloomington, MN (US);
Zheng Gao, Bloomington, MN (US);
Edward S. Murdock, Edina, MN (US);
Jumna P. Ramdular, Brooklyn Park, MN (US);
Timothy Radke, Eagan, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A spin valve sensor is disclosed that comprises a first layer of ferromagnetic material and a second layer of ferromagnetic material. A first layer of non-ferromagnetic material is positioned between the first and second layers of ferromagnetic material. A pinning layer is positioned adjacent to the first layer of ferromagnetic material such that the pinning layer is in contact with the first layer of ferromagnetic material. The spin valve includes synthetic antiferromagnetic bias means extending over passive end regions of the second layer of ferromagnetic material for producing a longitudinal bias in the passive end regions of a level sufficient to maintain the passive end regions in a single domain state. A method for forming a spin valve sensor with exchange tabs is also disclosed.