Magnetic domain wall movement element and magnetic recording array
AssigneeTDK Corporation
InventorsTakuya Ashida, Tatsuo Shibata
Life of this patent
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Abstract
A magnetic domain wall movement element according to the present embodiment includes a first ferromagnetic layer, a nonmagnetic layer, and a second ferromagnetic layer that are laminated in an order from a side close to a substrate. On a cross-section along a lamination direction and a second direction orthogonal to a first direction in which the first ferromagnetic layer extends in a plan view from the lamination direction, a shortest width of the first ferromagnetic layer in the second direction is shorter than a width of the nonmagnetic layer in the second direction.
Claims19
A magnetic domain wall movement element comprising:
- a substrate, a first ferromagnetic layer, a nonmagnetic layer, and a second ferromagnetic layer, wherein
- the first ferromagnetic layer, the nonmagnetic layer, and the second ferromagnetic layer are laminated in this order, and the first ferromagnetic layer is provided on a side of the substrate from the second ferromagnetic layer,
- in the magnetic domain wall movement element, a lamination direction is a direction of laminating the first ferromagnetic layer, the nonmagnetic layer, and the second ferromagnetic layer, a first direction is a direction along with a long axis of the first ferromagnetic layer in a plan view from the lamination direction, and a second direction is a direction along with a short axis of the first ferromagnetic layer in the plan view,
- on a cross-section along the lamination direction and the second direction orthogonal to the first direction, a shortest width of the first ferromagnetic layer in the second direction is shorter than a width of the nonmagnetic layer in the second direction, and
- a writing current flows along the first direction of the second ferromagnetic layer.
Dependencies are inferred from the claim text.