Patent ID: 6714444
Filing Date: 2004-03-30
Classification: B82Y,H01F

Abstract:
A magnetic element comprising:a first pinned layer, the pinned layer being ferromagnetic and having a first magnetization, the first magnetization being pinned in a first direction; a nonmagnetic spacer layer, the nonmagnetic spacer layer being conductive; a free layer, the first nonmagnetic spacer layer residing between the first pinned layer and the free layer, the free layer being ferromagnetic and having a second magnetization; a barrier layer, the barrier layer being an insulator and having a thickness that allows tunneling through the barrier layer; a second pinned layer, the second pinned layer being ferromagnetic and having a third magnetization pinned in a second direction, the barrier layer being between the free layer and the second pinned layer; wherein the magnetic element is configured to allow the second magnetization of the free layer to change direction due to spin transfer when a write current is passed through the magnetic element.