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:
Dec. 17, 2013
Filed:
Apr. 11, 2012
Antiferromagnetically-coupled soft bias magnetoresistive read head, and fabrication method therefore
Changhe Shang, Fremont, CA (US);
Daniele Mauri, San Jose, CA (US);
Kuok San Ho, Emerald Hills, CA (US);
Anup G. Roy, Fremont, CA (US);
Ming Mao, Dublin, CA (US);
Changhe Shang, Fremont, CA (US);
Daniele Mauri, San Jose, CA (US);
Kuok San Ho, Emerald Hills, CA (US);
Anup G. Roy, Fremont, CA (US);
Ming Mao, Dublin, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A magnetic read transducer is described with a magnetoresistive sensor that has a free layer, and an antiferromagnetically-coupled (AFC) soft bias layer for magnetically biasing the free layer. The free layer has a first edge in a track width direction along an air-bearing surface (ABS). At least a portion of the AFC soft bias layer is conformal to at least a portion of a second edge of the free layer, and situated to form a magnetic moment at an angle with respect to a center line of the free layer. The center line of the free layer extends in the same direction as the free layer first edge that is in the track width direction along the ABS.