Patent ID: 6847547

Claim:
A magnetic element comprising: a spin tunneling structure including a first pinned layer, a barrier layer, a first free layer, a first nonmagnetic spacer layer, and a second pinned layer, the first pinned layer being ferromagnetic and having a first pinned layer magnetization, the first pinned layer magnetization being pinned in a first direction, the barrier layer being an insulator and having a thickness that allows tunneling through the barrier layer, the barrier layer being disposed between the first pinned layer and the first free layer, the first free layer being ferromagnetic and having a first free layer magnetization, the first nonmagnetic spacer layer being conductive and disposed between the second pinned layer and the first free layer, the second pinned layer being ferromagnetic and having a second pinned layer magnetization pinned in a second direction; a spin valve structure having a third pinned layer, a second nonmagnetic spacer layer and a second free layer, the third pinned layer being ferromagnetic and having a third pinned layer magnetization, the third pinned layer magnetization being pinned in a third direction, the second free layer being ferromagnetic and having a second free layer magnetization, the second nonmagnetic spacer layer being conductive and residing between the second free layer and the second pinned layer, the first free layer and the second free layer being disposed such that the first free layer and the second free layer are magnetostatically coupled; wherein the magnetic element is configured to allow the first and/or second free layer magnetization to change direction due to spin transfer when a write current is passed through the magnetic element.