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:
May. 17, 2016
Filed:
May. 20, 2015
Hgst Netherlands B.v., Amsterdam, NL;
Kouichi Nishioka, Hiratsuka, JP;
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic sensor having an Ir seed layer for improved pinning robustness and improved sensor performance. The sensor includes an Ir seed layer formed directly beneath and in contact with a layer of antiferromagnetic material (AFM). The Ir seed layer improves the grain structure and smoothness of the above applied layers to significantly improve the performance and pinning robustness of the sensor. The use of the Ir seed layer reduces interlayer magnetic coupling of the layers, reduces surface roughness and increases the temperature at which the pinned layer looses it's pinning (i.e. raises the mean blocking temperature Tc of the pinned layer structure).