Patent ID: 7933137
Filing Date: 2011-04-26
Classification: G11C,H01L

Abstract:
1. A magnetic random access memory device comprising: a magnetic flip-flop structure comprising: wherein the first tunnel barrier structure is between the magnetization controlling structure and the magnetization controllable structure and the first polarizing layer is between the first stabilizing layer and the first tunnel barrier structure wherein the magnetic flip-flop structure has two stable overall magnetic configurations, and wherein a first unipolar current applied to the MRAM device will cause the orientation of the magnetization controlling structure to reverse its orientation and a second unipolar current applied to the MRAM device will cause the magnetization controllable structure to switch its magnetization so that the device reaches one of the two stable overall magnetic configurations, wherein the second unipolar current has an amplitude that is less than the first unipolar current; a reference layer a second tunnel barrier structure located between the reference layer and the magnetic flip-flop structure.