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:
Mar. 02, 2004
Filed:
Apr. 12, 2001
Eric W. Singleton, Greenfield, MN (US);
Kristin Joy Duxstad, Eden Prarie, MN (US);
Michael B. Hintz, Mahtomedi, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
This invention presents a method and structure for magnetic spin valves. The spin valve structure includes a first ferromagnetic layer separated from a second ferromagnetic layer by a non-magnetic layer. The spin valve structure also includes a first specular scattering layer separated from a second specular scattering layer by the first ferromagnetic layer, the non-magnetic layer, and the second ferromagnetic layer. The first ferromagnetic layer can include a free layer and the non-magnetic layer can include a spacer layer. The second ferromagnetic layer can include a pinned layer or a reference layer. The specular scattering layers can include a material such as Y O , HfO , MgO, Al O , NiO, Fe O , and Fe O . The specular scattering layers can also be used in a SAF structure. In the SAF structure, the antiferromagnetic coupling material can be co-deposited with the second specular scattering layer.