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. 19, 2016
Filed:
Mar. 13, 2015
Western Digital (Fremont), Llc, Fremont, CA (US);
Cheng-Han Yang, Mountain View, CA (US);
Chen-Jung Chen, Mountain View, CA (US);
Christian Kaiser, San Jose, CA (US);
Yuankai Zheng, Fremont, CA (US);
Qunwen Leng, Palo Alto, CA (US);
Mahendra Pakala, Fremont, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A magnetic read transducer including a magnetoresistive sensor is described, as well as a fabrication method thereof. The magnetoresistive sensor includes a cap layer overlaying a free layer. The cap layer is situated with a first thickness to absorb boron from the free layer. The magnetoresistive sensor is annealed, and boron is diffused from the free layer and absorbed by the cap layer, improving the magnetic performance of the free layer. The cap layer thickness is then reduced to a second thickness, thereby reducing the shield-to-shield (SS) stack spacing of the magnetoresistive sensor and allowing for increased areal recording density.