Patent ID: 8446761

Claim:
A magnetic junction for use in a magnetic device comprising: a pinned layer; a plurality of nonmagnetic spacer layers; and a plurality of free layers interleaved with the plurality of nonmagnetic spacer layers, a first nonmagnetic spacer layer of the plurality of nonmagnetic spacer layers being between the plurality of free layers and the pinned layer, each of the plurality of free layers being configured to be switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction, each of the plurality of free layers having a critical switching current density, the critical switching current density of one of the plurality of free layers changing monotonically from the critical switching current density of an adjacent free layer of the plurality of free layers, the adjacent free layer being between the pinned layer and the one of the plurality of free layers, each of at least a portion of the plurality of free layers having an easy-cone anisotropy such that a magnetic moment of each of the at least the portion of the plurality of free layers is stable canted at an angle that from a normal to a plane of the plurality of free layers, the angle being greater than zero and less than ninety degrees.