Racetrack wire, magnetic memory device using the racetrack wire, and operation method of the magnetic memory device

Abstract

Provided is a magnetic memory device including a moving element, a write element configured to inject a magnetic domain into the moving element, and a read element apart from the write element in a length direction of the moving element and configured to read the magnetic domain of the moving element. The moving element includes a free layer. A pinning site providing layer faces the free layer. The pinning site providing layer includes a plurality of first regions including an antiferromagnetic material. The plurality of first regions are apart from each other in the length direction of the moving element and lower the magnetic anisotropy energy of regions of the free layer facing the plurality of first regions. A plurality of pinning sites configured to pin the magnetic domains to regions of the free layer facing the plurality of first region may be provided by the plurality of first regions.

Dependencies are inferred from the claim text.