Paramagnetic hexagonal metal phase coupling spacer

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 Me3X or Me2X, wherein Me is a magnetic metal having a magnetic moment and X is a metal that alloys w...

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Bibliographic Details
Main Authors Brown, Stephen L, Gottwald, Matthias Georg, Reznicek, Alexander
Format Patent
LanguageEnglish
Published 01.10.2024
Subjects
ELECTRICITY
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary: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 Me3X or Me2X, 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 Me3X coupling spacer is present, Me is cobalt, and X is vanadium, niobium, tantalum, molybdenum or tungsten. In embodiments in which a Me2X 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.
Bibliography:Application Number: US202117550464