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:
Mar. 18, 2014
Filed:
Jul. 24, 2012
Qing He, Plymouth, MN (US);
Konstantin Nikolaev, Edina, MN (US);
Hao Meng, Singapore, SG;
Yonghua Chen, Edina, MN (US);
Juren Ding, Eden Prairie, MN (US);
Qing He, Plymouth, MN (US);
Konstantin Nikolaev, Edina, MN (US);
Hao Meng, Singapore, SG;
Yonghua Chen, Edina, MN (US);
Juren Ding, Eden Prairie, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
In some embodiments, a current perpendicular to the plane giant magneto-resistance (CPP GMR) read sensor may include a reference layer and/or a free layer that includes a plurality of sub-layers. For example, at least one of the reference layer or free layer may include a first ferromagnetic sub-layer, a second ferromagnetic sub-layer, and a Heusler alloy layer located between the first ferromagnetic sub-layer and the second ferromagnetic sub-layer. In some embodiments, a CPP GMR read sensor may include a current closed path (CCP) spacer layer between the reference layer and the free layer. The CCP spacer layer may include Ag and AlO. In further embodiments, a CPP GMR read sensor may include a Heusler alloy free layer, a Heusler alloy reference layer, and a CCP spacer layer.