Patent ID: 7088611

Claim:
A magnetoresistive memory cell comprising: a magnetic tunnel junction comprising first and second stacked magnetic regions including magnetic material with a magnetic anisotropy in parallel alignment, wherein the first and second stacked magnetic regions being separated by a layer of non-magnetic material, the first magnetic region being positioned on one side of the layer of non-magnetic material and being provided with a fixed magnetic moment vector, the second magnetic region comprising at least two ferromagnetic layers being antiferromagnetically coupled and positioned on the other side of the layer of non-magnetic material, and the second magnetic region further including a free magnetic moment vector that is freely switchable between the same and opposite directions with respect to the fixed magnetic moment vector of the first magnetic region, the free magnetic moment vector being magnetically coupled to magnetic fields of first and second current lines to facilitate switching of the free magnetic moment vector; and a switchable ferromagnetic offset field layer including a free magnetic moment vector comprising at least a vector component aligned with the magnetic anisotropy of the first and second magnetic regions and being freely switchable between the same and opposite directions with respect to the fixed magnetic moment vector of the first magnetic region.