Patent ID: 6272036
Filing Date: 2001-08-07
Classification: B82Y,G11B,G11C,H01F,H01L

Abstract:
A system for controlling a magnetization direction of materials, comprising:a ferromagnetic device, including:a first electrode comprising a first ferromagnetic layer;a second electrode comprising a second ferromagnetic layer disposed adjacent the first ferromagnetic layer such that an interlayer exchange coupling is formed between the first and second ferromagnetic layers;an insulating layer located between the first and second electrodes;a spacer layer located between the first electrode and the second electrode; andvoltage bias means sufficient for changing the interlayer exchange coupling without assistance from an external magnetic field, such that when the bias means applies a bias voltage to the ferromagnetic layers, the interlayer exchange coupling is affected and the direction of magnetization of the second ferromagnetic layer is altered.