Patent ID: 7983075
Filing Date: 2011-07-19
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A semiconductor device, comprising: a plurality of write lines provided in rows and columns; and a magnetoresistive element arranged to correspond to an intersection of two write lines corresponding to a row and a column among said plurality of write lines, said magnetoresistive element including a pinned layer having a fixed magnetization direction irrespective of said write magnetic field, a recording layer having a magnetization direction changeable according to said write magnetic field, and a tunnel insulating layer sandwiched between said pinned layer and said recording layer, said recording layer including a first ferromagnetic layer, a first nonmagnetic layer stacked on said first ferromagnetic layer, a second ferromagnetic layer stacked on said first nonmagnetic layer, a second nonmagnetic layer stacked on said second ferromagnetic layer, a third ferromagnetic layer stacked on said second nonmagnetic layer, wherein said recording layer has a length in a row direction substantially identical to a length in a column direction, said second and third ferromagnetic layers include a same material different from said first ferromagnetic layer, a thickness of said second ferromagnetic layer and a thickness of third ferromagnetic layer are substantially same.