Patent ID: 8238135

Claim:
A magnetic random access memory of domain wall motion type comprising: a magnetic recording layer that is a ferromagnetic layer; and a pinned layer connected to said magnetic recording layer through a non-magnetic layer, wherein said magnetic recording layer includes: a magnetization switching region having reversible magnetization and overlapping with said pinned layer; a first magnetization fixed region connected to a first boundary of said magnetization switching region and whose magnetization direction is fixed to a first direction; and a second magnetization fixed region connected to a second boundary of said magnetization switching region and whose magnetization direction is fixed to a second direction, wherein strength of damping of spin precession is represented by a damping coefficient, and said damping coefficient in at least a portion of said first magnetization fixed region and said second magnetization fixed region is larger than said damping coefficient in said magnetization switching region, wherein the magnetic random access memory further comprises a non-magnetic metal layer provided adjacent to said at least portion, and wherein said non-magnetic metal layer is formed of at least any of Pt and Pd.