Patent ID: 7068536

Claim:
A magnetic random access memory comprising: a substrate; a MTJ (Magnetic tunnel Junction) device formed above said substrate; a first wiring line formed above said substrate; and a second wiring line formed above said substrate, wherein said MTJ device comprises: a pinned ferromagnetic layer which has a pinned magnetization; a free ferromagnetic lamination layer; and a tunnel barrier layer interposed between said pinned ferromagnetic layer and said free ferromagnetic lamination layer, said ferromagnetic lamination layer comprises: a first ferromagnetic layer coupled to said tunnel barrier layer and having a reversible first magnetization; a second ferromagnetic layer which has and a second magnetization whose direction is opposite to a direction of said magnetization, said second magnetization being reversible; and a non-magnetic conductive layer provided between said first ferromagnetic layer and said second ferromagnetic layer and having a sheet resistance lower than sheet resistance of said first ferromagnetic layer and said second ferromagnetic layer, a write current is supplied said free ferromagnetic lamination layer through one of said first wiring line and said second wiring line to reverse said first magnetization and said second magnetization, and the other of said first wiring line and said second wiring line receives the supplied write current from said free ferromagnetic lamination layer.