Patent ID: 7759750

Claim:
A magnetic memory cell comprising: a magnetoresistance device which includes, a non-magnetic film, a ferromagnetic free layer; and a ferromagnetic pinned layer formed as sandwiching the non-magnetic film with the ferromagnetic free layer; an electrode for applying a write current in a film-thickness direction of the magnetoresistance device, the film-thickness direction being from the ferromagnetic pinned layer to the ferromagnetic free device or from the ferromagnetic free layer to the ferromagnetic pinned layer, the write current causing a spin transfer torque; and a ferromagnetic wiring arranged in parallel to a magnetic easy axis of the ferromagnetic free layer, and having a boundary region where a magnetic pole of a magnetic domain with a first magnetization direction faces the same magnetic pole of a second magnetic domain with a second magnetization direction opposite to the first direction, the magnetic easy axis of the ferromagnetic free layer being parallel to the film plane, wherein data is written or rewritten by applying the write current to the magnetoresistance device in a state where a magnetic field generated from the boundary region of the ferromagnetic wiring is applied to the ferromagnetic free layer, and then by reversing magnetization of the ferromagnetic free layer with the spin transfer torque.