Patent ID: 7227773

Claim:
A magnetic memory device, comprising: a plurality of magnetic cells including a plurality of magnetic elements, at least one magnetic element including, a pinned layer and having a first magnetization that is pinned in a first direction, a half-metallic material layer formed on the pinned layer, a spacer layer formed on the half-metallic material layer, the spacer layer being nonmagnetic and conductive, and a free layer formed on the spacer layer, the free layer having a second magnetization that changes direction based on the spin-transfer effect when a write current passes through the magnetic element; a plurality of rows lines coupled to the plurality of magnetic cells; and a plurality of column lines coupled to the plurality of magnetic cells, the plurality of row lines and the plurality of column lines selecting a portion of the plurality of magnetic cells for reading and writing; wherein at least one magnetic element further includes: a second spacer layer formed on the free layer, the second spacer layer being nonmagnetic and conductive; a second half-metallic material layer formed on the second spacer layer; and a second pinned layer formed on the second half-metallic layer, the second pinned layer having a third magnetization that is pinned in a direction that is different from the first direction, wherein at least one second pinned layer of at least one magnetic element is formed from one of a ferromagnetic material and a ferrimagnetic material.