Magnetic memory
AssigneeNEC Corporation
InventorHiroaki Honjou
Life of this patent
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Abstract
A magnetic memory has: a pinning layer being a perpendicular magnetic film whose magnetization direction is fixed; an underlayer formed on the pinning layer; and a data storage layer being a perpendicular magnetic film formed on the underlayer. The data storage layer has: a magnetization free region whose magnetization direction is reversible; and a magnetization fixed region magnetically coupled with the pinning layer through the underlayer. A magnetization direction of the magnetization fixed region is fixed by the magnetic coupling. The underlayer has a magnetic underlayer made of a magnetic material.
Claims14
A magnetic memory comprising:
- a pinning layer being a perpendicular magnetic film whose magnetization direction is fixed;
- an underlayer formed on said pinning layer;
- and
- a data storage layer being a perpendicular magnetic film formed on said underlayer,
- wherein said data storage layer comprises:
- a magnetization free region whose magnetization direction is reversible;
- and
- a magnetization fixed region magnetically coupled with said pinning layer through said underlayer and whose magnetization direction is fixed by the magnetic coupling, and
- wherein said underlayer comprises a magnetic underlayer made of a magnetic material.
Dependencies are inferred from the claim text.