Patent ID: 7821088

Claim:
A magnetic element comprising: a pinned layer; a spacer layer, the spacer layer being nonmagnetic; and a free layer having a free layer magnetization, the spacer layer residing between the pinned layer and the free layer, the free layer including a first ferromagnetic layer and a second ferromagnetic layer, the second ferromagnetic layer having a very high perpendicular anisotropy and an out-of-plane demagnetization energy, the very high perpendicular anisotropy energy being greater than the out-of-plane demagnetization energy, the first ferromagnetic layer having a first layer perpendicular anisotropy energy and a first layer out-of-plane demagnetization energy, the first layer perpendicular anisotropy energy being less than the first layer out-of-plane demagnetization energy; wherein the magnetic element is configured to allow the free layer magnetization to be switched due to spin transfer when a write current is passed through the magnetic element.