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. 09, 2015
Filed:
May. 30, 2014
Hgst Netherlands B.v., Amsterdam, NL;
Yongchul Ahn, San Jose, CA (US);
David P. Druist, Santa Clara, CA (US);
Zheng Gao, San Jose, CA (US);
Ying Hong, Morgan Hill, CA (US);
Yunhe Huang, Pleasanton, CA (US);
Quang Le, San Jose, CA (US);
Thomas L. Leong, San Jose, CA (US);
Guangli Liu, Pleasanton, CA (US);
Xiaoyong Liu, San Jose, CA (US);
David J. Seagle, Morgan Hill, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic read sensor having a magnetic seed layer, a pinned layer structure formed over the magnetic seed layer, a non-magnetic barrier or spacer layer formed over the pinned layer structure and a magnetic free layer structure formed over the non-magnetic barrier or spacer layer. The pinned layer has a stripe height (measured from the media facing surface) that is greater than a stripe height of the magnetic free layer structure. In addition, the magnetic seed layer structure has a stripe height (also measured from the media facing surface) that is greater than the stripe height of the magnetic pinned layer structure and the magnetic free layer structure. The stripe height of the magnetic seed layer structure can be controlled independently of the stripe heights of the magnetic pinned layer structure and the magnetic free layer structure.