Patent ID: 8891290
Filing Date: 2014-11-18
Classification: G11C,H01L

Abstract:
1. A magnetic junction residing on a substrate and for use in a magnetic device comprising: a first pinned layer; a first nonmagnetic spacer layer having a first thickness; a free layer, the first nonmagnetic spacer layer residing between the pinned layer and the free layer, the first pinned layer residing between the free layer and the substrate; a second nonmagnetic spacer layer having a second thickness greater than the first thickness, the first nonmagnetic spacer layer and the second nonmagnetic spacer layer being both insulating tunneling barrier layers; and a second pinned layer, the second nonmagnetic spacer layer residing between the free layer and the second pinned layer; wherein the magnetic junction is configured such that the free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction.