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. 24, 1998
Filed:
Feb. 14, 1997
Fujian Huang, Pittsburgh, PA (US);
James Giusti, Chanhassen, MN (US);
Gregory S Mowry, Burnsville, MN (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A method of fabricating a dual magnetoresistive (DMR) sensor with improved sensor-to-sensor match is disclosed. A first Mo conductor layer and a first NiMn antiferromagnetic layer are formed on top of a first gap layer in wing regions of the DMR sensor. The first NiMn layer is formed on top of the first Mo layer. A first NiFe sensor layer, a first spacer layer and a second NiFe sensor layer are deposited on top of the first NiMn layer in the wing regions and on top of the first gap layer in the active region. The first NiFe sensor layer, the first spacer layer and the second NiFe sensor layer are all deposited in a single vacuum deposition run to minimize material mismatches, and are simultaneously patterned to the desired geometry to minimize misalignment between the two sensor layers. A second conductor layer and a second antiferromagnetic layer are formed on top the second NiFe sensor layer in the wing regions.