Patent ID: 7357995
Filing Date: 2008-04-15
Classification: B82Y,G01R,G11B,G11C,H01F,H01L,Y10T

Abstract:
1. A magnetic tunneling device, comprising: a first body centered cubic (bcc) magnetic layer and a second bcc magnetic layer, wherein the first and second bcc magnetic layers include material selected from the group consisting of ferromagnetic materials and ferrimagnetic materials; at least one spacer layer of bcc material between the bcc magnetic layers, wherein the spacer layer exchange couples the first and second bcc magnetic layers; a tunnel barrier in proximity with the second bcc magnetic layer to permit spin-polarized current to pass between the tunnel barrier and the second bcc magnetic layer, wherein the tunnel barrier is selected from the group consisting of MgO and Mg—ZnO tunnel barriers; and a free magnetic layer in proximity with the tunnel barrier, wherein the free magnetic layer includes material selected from the group consisting of ferromagnetic materials and ferrimagnetic materials, the device forming a magnetic tunnel junction having a tunneling magnetoresistance of at least 100% at room temperature.