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:
Feb. 09, 2010
Filed:
Aug. 08, 2006
Tmr element having a tunnel barrier which includes crystalline portions and non-crystalline portions
Applicants:
Takumi Uesugi, Tokyo, JP;
Satoshi Miura, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01); G11C 11/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magneto-resistive element has a lower layer, a tunnel barrier layer, and an upper layer. The lower layer, the tunnel barrier layer, and the upper layer are disposed adjacent to each other and are stacked in this order. A magnetization direction of either of the lower layer and the upper layer is fixed relative to an external magnetic field, and a magnetization direction of the other layer is variable in accordance with the external magnetic field. A crystalline portion and a non-crystalline portion co-exist in a plane that is parallel with a surface of the tunnel barrier layer.