Patent ID: 8599605

Claim:
A magnetic storage device comprising: a laminated structure configured to include a first magnetic body, a nonmagnetic body, and a second magnetic body which are laminated; and a third magnetic body configured to be provided at any of a side of said first magnetic body and a side of said second magnetic body, wherein resistance of said laminated structure is changed based on a difference between magnetization directions of said first magnetic body and said second magnetic body, a projection of one magnetic body of said first magnetic body and said third magnetic body onto another magnetic body of said first magnetic body and said third magnetic body at least partly overlaps said another magnetic body, said another magnetic body and said one magnetic body are magnetically coupled, a planar shape of said another magnetic body is a shape that is long in a first direction, a length of said one magnetic body is shorter than a length of said first magnetic body in said first direction, and an aspect ratio of a length of a long-axis direction of said planar shape of said another magnetic body divided by a length of a short-axis direction is greater than an aspect ratio of a length of a long-axis direction of a planar shape of said one magnetic body divided by a length of a short-axis direction, wherein a magnetization direction of said third magnetic body is variable, and wherein the first magnetic body and the third magnetic body are free layers.