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.:

US 7348647 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 25, 2008

Filed:

Jun. 14, 2002
Applicants:

Roland Mattheis, Jena, DE;

Hugo Van Den Berg, Diethoorn, NL;

Inventors:

Roland Mattheis, Jena, DE;

Hugo Van Den Berg, Diethoorn, NL;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/82 (2006.01);
U.S. Cl.
CPC ...
Abstract

A digital magnetic memory cell device for read and/or write operations, having a soft-magnetic read and/or write layer system and at least one hard-magnetic reference layer system, which is designed as an AAF system and includes at least one reference layer, wherein the reference layer system has a layer section comprising at least one bias layer system with at least one ferrimagnetic layer, the magnetic moments of the bias layer system and of the reference layer being coupled in opposite directions via a coupling layer.


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