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:
Oct. 01, 2024
Filed:
Dec. 14, 2021
International Business Machines Corporation, Armonk, NY (US);
Alexander Reznicek, Troy, NY (US);
Matthias Georg Gottwald, New Rochelle, NY (US);
Stephen L Brown, Carmel, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A top pinned SAF-containing magnetic tunnel junction structure is provided that contains a coupling spacer composed of a paramagnetic hexagonal metal phase material that has a stoichiometric ratio of MeX or MeX, wherein Me is a magnetic metal having a magnetic moment and X is a metal that alloys with Me in a hexagonal phase and dilutes the magnetic moment of Me. In embodiments in which a MeX coupling spacer is present, Me is cobalt, and X is vanadium, niobium, tantalum, molybdenum or tungsten. In embodiments in which a MeX coupling spacer is present, Me is iron and X is tantalum or tungsten. The coupling spacer is formed by providing a material stack including at least a precursor paramagnetic hexagonal metal phase material forming multilayered structure that includes alternating layers of magnetic metal, Me, and metal, X, and then thermally soaking the material stack.