Patent ID: 7489541
Filing Date: 2009-02-10
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetic element comprising: a pinned layer; a spacer layer; a free layer, the free layer being ferrimagnetic and including at least one of a conductive ferrite, a garnet, a ferrimagnetic alloy excluding a rare earth, a heavy rare-earth transition metal alloy, a half-metallic ferrimagnet, and a bilayer including a rare earth transition metal alloy layer and a spin current enhancement layer residing between the rare-earth transition metal alloy layer and the spacer layer; wherein the magnetic element is configured to allow the free layer to be switched using spin transfer when a write current is passed through the magnetic element; wherein the pinned layer is a synthetic pinned layer including a first ferromagnetic layer, a second ferromagnetic layer, and a nonmagnetic conductive layer residing between the first ferromagnetic layer and the second ferromagnetic layer.