Patent ID: 9741926
Date: 2017-08-22
CPC Classifications: G11C,H01F,H01L

Claim:
1. A magnetic device, comprising a bottom electrode in a first plane; a perpendicular synthetic antiferromagnetic structure, the perpendicular synthetic antiferromagnetic structure including a magnetic reference layer in a second plane, the magnetic reference layer having a magnetization direction that is perpendicular to the second plane and having a fixed magnetization direction; a non-magnetic tunnel barrier layer in a third plane and disposed over the magnetic reference layer; a free magnetic layer in a fourth plane and disposed over the non-magnetic tunnel barrier layer, the free magnetic layer having a magnetization vector that is perpendicular to the fourth plane and having a magnetization direction that can switch from a first magnetization direction to a second magnetization direction, the magnetic reference layer, the non-magnetic tunnel barrier layer and the free magnetic layer forming a magnetic tunnel junction; a non-magnetic thermal stability enhancement coupling layer in a fifth plane and disposed over the free magnetic layer; a magnetic thermal stability enhancement layer in a sixth plane that is physically separated from the free magnetic layer and coupled to the free magnetic layer by the non-magnetic thermal stability enhancement coupling layer, the magnetic thermal stability enhancement layer having a magnetization direction that is perpendicular to the sixth plane and having a magnetization direction that can switch from the first magnetization direction to the second magnetization direction, wherein switching of the magnetic thermal stability enhancement layer from the first magnetization direction to the second magnetization direction tracks switching in the magnetic free layer; and a cap layer in a seventh plane and disposed over the thermal stability enhancement layer.