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. 25, 2003
Filed:
Nov. 08, 2000
David W. Abraham, Croton-on-Hudson, NY (US);
Stuart S. P. Parkin, San Jose, CA (US);
John C. Slonczewski, Katonah, NY (US);
Philip L. Trouilloud, Norwood, NJ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The use of ferrimagnetic materials is proposed for use in magnetic devices. Such magnetic devices include magnetic tunnel junctions (MTJ) which have at least two magnetic layers separated by an insulating barrier layer, wherein at least one of the two magnetic layers is ferrimagnetic. Such MTJ's are used in MRAM (magnetic random access memory) structures. Where the magnetic device is a magnetic sensor, it preferably includes a layer that comprises a ferrimagnetic material separated from another magnetic layer by a barrier layer and the magnetizations of the magnetic layer are oriented at an angle to one another.