Patent ID: 8300456

Claim:
A magnetic random access memory comprising: a pinned layer whose magnetization orientation is fixed; and a magnetic recording layer connected to said pinned layer through a first nonmagnetic layer, wherein said magnetic recording layer comprises: a first free layer; a second free layer being in contact with said first nonmagnetic layer and having reversible magnetization; and a second nonmagnetic layer provided between said first free layer and said second free layer, wherein said first free layer includes: a magnetization switching region having reversible magnetization and overlapping said second free layer; a first magnetization fixed region connected to a first boundary of said magnetization switching region and whose magnetization orientation is fixed in a first direction; and a second magnetization fixed region connected to a second boundary of said magnetization switching region and whose magnetization orientation is fixed in a second direction, wherein both of said first direction and said second direction are directions toward said magnetization switching region or directions away from said magnetization switching region, magnetization of said magnetization switching region is directed to said first boundary or said second boundary, a domain wall is formed at said first boundary or said second boundary in said first free layer, and data writing is performed by moving said domain wall, wherein said second free layer has no domain wall, said second nonmagnetic layer is so formed as to cover at least said magnetization switching region, and said magnetization switching region of said first free layer and said second free layer are magnetically coupled to each other through said second nonmagnetic layer.