Thermally assisted magnetic writing device
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsBernard Dieny, Jerome Moritz, Ricardo Sousa
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Abstract
A thermally assisted magnetic writing device including a first magnetic layer known as the “reference layer,” a second magnetic layer known as the “storage layer” that presents a variable magnetization direction, a spacer situated between the reference layer and the storage layer and a first antiferromagnetic layer in contact with the storage layer, the first antiferromagnetic layer being able to trap the magnetization direction of the storage layer. The magnetic device also includes a stabilization layer made of a ferromagnetic material, the stabilization layer being in contact with the first antiferromagnetic layer.
Claims17
A thermally assisted magnetic writing device comprising:
- a first magnetic layer;
- a second magnetic layer that presents a variable magnetization direction;
- a spacer arranged between the first magnetic layer and the second magnetic layer;
- a first antiferromagnetic pinning layer in contact with the second magnetic layer, the first antiferromagnetic layer being able to trap the magnetization direction of the second magnetic layer;
- a heating device configured to heat said pinning layer such that, during heating, the temperature of said pinning layer exceeds its blocking temperature such that the magnetization direction of said second magnetic layer is no longer pinned;
- a stabilization layer made in a ferromagnetic material, the stabilization layer being in contact with the first antiferromagnetic layer by its face opposite from the second magnetic layer.
Dependencies are inferred from the claim text.