Patent ID: 6950335

Claim:
Magnetic device comprising a magnetic tunnel junction that comprises: a first magnetic layer forming a reference layer and having a magnetisation of fixed direction, a second magnetic layer forming a storage layer and having a magnetisation of variable direction, and a third layer that is semiconductive or electrically insulating and which separates the first layer from the second layer, wherein the blocking temperature of the magnetisation of the storage layer is lower than the blocking temperature of the magnetisation of the reference layer and in that the device further comprises: means for heating the storage layer to a temperature higher than the blocking temperature of the magnetisation of said storage layer, said means for heating the storage layer being means provided to make an electric current flow through the magnetic tunnel junction, and means for applying, to said storage layer, a magnetic field capable of orientating the magnetisation of said storage layer with respect to the magnetisation of the reference layer, without modifying the orientation of said reference layer.