Patent ID: 7760542
Filing Date: 2010-07-20
Classification: B82Y,G01R,G06T,G11C

Abstract:
1. A magnetic element comprising: a first ferromagnetic free layer having a magnetization orientation, a second ferromagnetic free layer having a magnetization orientation, and a nonmagnetic metallic spacer layer therebetween; a ferromagnetic pinned layer having a magnetization orientation pinned in a first direction; an insulative barrier layer between the pinned layer and the first free layer; a current-blocking insulator layer proximate the second free layer, the current-blocking insulator having a via therethrough; wherein the magnetic element is configured to allow the magnetization orientation of the second free layer to change direction due to spin torque when a write current is passed through the via in the current-blocking insulator layer, and wherein the magnetic element is configured to allow the magnetization orientation of the first free layer to change direction due to spin torque when the write current is removed.