Patent ID: RE42619

Claim:
Magnetic A magnetic device comprising a magnetic tunnel junction that comprises: a first magnetic layer forming defining a reference layer and having a magnetisation magnetization of fixed direction, a second magnetic layer forming defining a storage layer and having a magnetisation magnetization of variable direction, and a third layer defining a tunnel barrier that is semiconductive or electrically insulating and which separate's the first layer from the second layer, wherein the first and second magnetic layers have respective blocking temperatures and 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 , wherein 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 generating an electric current flow through the magnetic tunnel junction, wherein the storage layer is heated to a temperature higher than the blocking temperature of the storage layer, and means for applying, to said the storage layer, a magnetic field capable of orientating the magnetisation magnetization of said the storage layer with respect to the magnetisation magnetization of the reference layer, without modifying the orientation of said the magnetization of the reference layer.