Patent ID: 9006848
Filing Date: 2015-04-14
Classification: G11C,H01L

Abstract:
1. A nonvolatile magnetic memory device comprising: a magnetic tunnel junction (MTJ), the MTJ comprising a pinned magnetic layer, a nonmagnetic insulating layer, and a free magnetic layer, wherein the free magnetic layer comprises at least one soft magnetic amorphous alloy layer, the soft magnetic amorphous alloy layer including zirconium (Zr) and any of cobalt (Co) or a Co-based alloy, wherein the MTJ further comprises a nonmagnetic metal layer that is disposed between the nonmagnetic insulating layer and the free magnetic layer, wherein the free magnetic layer has a multi-layer structure, and wherein the multi-layer structure comprises a plurality of two-part layers repeatedly stacked on the nonmagnetic insulating layer, and wherein each of the two-part layers includes the soft magnetic amorphous alloy layer and the nonmagnetic metal layer.