Patent ID: 7502248
Filing Date: 2009-03-10
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetic memory comprising: first and second magnetically changeable ferromagnetic layers; a ferromagnetic reference layer having a fixed magnetization state; a first spacer layer interposed between the first and second magnetically changeable ferromagnetic layers; and a second spacer layer interposed between the ferromagnetic reference layer and the second magnetically changeable ferromagnetic layers, wherein the first spacer layer and the second spacer layer are non-magnetic, a magnetization orientation of the second magnetically changeable ferromagnetic layer is parallel or antiparallel with respect to a magnetization orientation of the ferromagnetic reference layer, and a magnetization orientation of the first magnetically changeable ferromagnetic layer is parallel or antiparallel with respect to the magnetization orientation of the second magnetically changeable ferromagnetic layer, and a difference ΔR