Patent ID: 8791534

Claim:
A magnetic memory device comprising a first magnetization free layer, a non-magnetic layer, a reference layer and a magnetization pinned layer, wherein said first magnetization free layer comprises ferromagnetic material having perpendicular magnetic anisotropy, and said first magnetization free layer comprises a first magnetization pinned region, a second magnetization pinned region and a magnetization free region, wherein said magnetization pinned layer comprises said first magnetization pinned layer magnetically coupled with said first magnetization pinned region at least, and wherein a first displacement is present between a first boundary line and a first vertical line, where a curve portion, which crosses said first magnetization free layer, of an outer circumferential line of said first magnetization pinned layer is said first boundary line, a segment which links a center of said magnetization free region and a center of said first magnetization pinned region is a first segment, and a segment, which is a vertical line of the first segment, and which comes in contact with the first boundary line is said first vertical line.