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:
Jul. 30, 2013
Filed:
Jul. 21, 2009
Qunwen Leng, Palo Alto, CA (US);
Christian Kaiser, San Jose, CA (US);
Yimin Guo, San Jose, CA (US);
Mahendra Pakala, Fremont, CA (US);
Sining Mao, Fremont, CA (US);
Qunwen Leng, Palo Alto, CA (US);
Christian Kaiser, San Jose, CA (US);
Yimin Guo, San Jose, CA (US);
Mahendra Pakala, Fremont, CA (US);
Sining Mao, Fremont, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A magnetoresistive sensor having a novel free layer and a method of producing the same are disclosed. The magnetoresistive sensor comprises a pinned layer, a barrier layer disposed over the pinned layer, and a free layer disposed over the barrier layer. The free layer comprises a first magnetic layer disposed over the barrier layer. The first magnetic layer has a positive spin polarization, a positive magnetostriction, and a polycrystalline structure. The free layer further comprises a second magnetic layer disposed over the first magnetic layer. The second magnetic layer has a negative magnetostriction and comprises at least cobalt (Co) and boron (B).