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. 02, 2021
Filed:
Mar. 15, 2018
International Business Machines Corporation, Armonk, NY (US);
Luqiao Liu, Brookline, MA (US);
Jonathan Z. Sun, Shrub Oak, NY (US);
Daniel C. Worledge, San Jose, CA (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A magneto-resistance random access memory (MRAM) cell includes a transistor, a wire and a magnetic tunnel junction (MTJ). The MTJ includes a fixed layer of fixed magnetic polarity electrically connected with the transistor, a free layer of variable magnetic polarity electrically connected with the wire and an insulator between the fixed and free layers. First current passed through the wire destabilizes the variable magnetic polarity of the free layer. Second current passed through the transistor in one of two directions during first current passage through the wire directs the variable magnetic polarity of the free layer toward a parallel or anti-parallel condition with respect to the fixed magnetic polarity of the fixed layer. A ceasing of the first current prior to a ceasing of the second current sets the variable magnetic polarity of the free layer in the parallel or anti-parallel condition.