Patent ID: 8531875
Filing Date: 2013-09-10
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetic memory including at least one memory cell, the memory cell comprises a magnetoresistive element serving as a memory element, and a first electrode and a second electrode which are electricity connected to the magnetoresistive element, the magnetoresistive element comprises a first magnetic layer having a magnetization direction that is substantially perpendicular to a film surface and variable, a tunnel barrier layer provided on the first magnetic layer, a second magnetic layer provided on the tunnel barrier layer and having a magnetization direction that is substantially perpendicular to a film surface and invariable, and a third magnetic layer provided on the second magnetic layer and having a magnetization antiparallel to the magnetization direction of the second magnetic layer, and a diameter of an upper surface of the first magnetic layer is smaller than a diameter of a lower surface of the tunnel barrier layer, and a diameter of a lower surface of the second magnetic layer is not more than a diameter of an upper surface of the tunnel barrier layer.