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:
Jun. 02, 2015
Filed:
Jan. 31, 2014
Hgst Netherlands B.v., Amsterdam, NL;
Zheng Gao, San Jose, CA (US);
Hardayal S. Gill, Palo Alto, CA (US);
Ying Hong, Morgan Hill, CA (US);
Quang Le, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic sensor having a first sensor stack portion that includes a free layer, non-magnetic spacer or barrier layer and a portion of a pinned layer structure. The sensor has second sensor stack portion formed over the first sensor stack portion. The second sensor stack portion include includes a second portion of the pinned layer structure and a layer of antiferromagnetic material formed over the. The first sensor stack portion is configured with a width and stripe height that define the functional width and strip height of the sensor, whereas the upper portion can be made wider and deeper without affecting sensor performance. Because the patterning of the first sensor stack portion is performed on a thinner structure than would be necessary to pattern the entire sensor stack, the patterning can be performed with smaller dimensions and increased resolution.