Patent ID: 9337415
Filing Date: 2016-05-10
CPC Classification: G11C,H01L

Claim Text:
1. A magnetic tunnel junction memory cell comprising: a substrate; a ferromagnetic reference layer having perpendicular magnetic anisotropy on the substrate, the reference layer having a fixed magnetization substantially perpendicular to the plane of the reference layer; a ferromagnetic free layer comprising Co, Fe and B and having perpendicular magnetic anisotropy, the free layer having a magnetization substantially perpendicular to the plane of the free layer and capable of being switched between substantially parallel and substantially antiparallel to the magnetization of the reference layer; an insulating oxide tunnel barrier layer between the reference layer and the free layer; an insulating oxide capping layer on and in contact with the free layer; a ferromagnetic enhancement layer on and in contact with the insulating oxide capping layer and comprising Co, Fe and B; and a nonmagnetic cap layer on the enhancement layer.