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:
Nov. 03, 2009
Filed:
Feb. 13, 2006
Kunliang Zhang, Milpitas, CA (US);
Daniel G Abels, San Francisco, CA (US);
Min LI, Dublin, CA (US);
Yu-hsia Chen, Mountain View, CA (US);
Kunliang Zhang, Milpitas, CA (US);
Daniel G Abels, San Francisco, CA (US);
Min Li, Dublin, CA (US);
Yu-Hsia Chen, Mountain View, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
Concerns about inadequate electromigration robustness in CCP CPP GMR devices have been overcome by adding magnesium to the current confining structures that are presently in use. In one embodiment the alumina layer, in which the current carrying copper regions are embedded, is fully replaced by a magnesia layer. In other embodiments, alumina is still used but a layer of magnesium is included within the structure before it is subjected to ion assisted oxidation.