Patent ID: 8519496

Claim:
A spin-transfer torque magnetic random access memory (STTMRAM) element configured to store a state when electrical current is applied thereto, the STTMRAM element comprising: a) a fixed layer with magnetization pinned in the plane of the fixed layer; b) a barrier layer formed on top of the fixed layer; c) a junction layer (JL); d) a magnetization layer disposed between the barrier layer and the JL, the magnetization layer comprising a first free layer and a second free layer, separated by a non-magnetic separation layer (NMSL), the first and second free layers each having in-plane magnetizations that are antiparallel relative to each other and act on each other through magneto-static field; e) a perpendicular reference layer (PRL) formed on top of the JL with magnetization in a direction perpendicular to the magnetization of the fixed layer, the direction of the magnetization of the first and second free layers each being in-plane prior to the application of electrical current and after the application of electrical current to the STTMRAM element, the direction of magnetization of the second free layer becoming tilted out-of-plane and the direction of magnetization of the first free layer switches in-plane and upon electrical current no longer flowing through the STTMRAM element, the direction of magnetization of the second free layer returning to an in-plane direction that is substantially opposite to that of the first free layer.