Patent ID: 9455012
Filing Date: 2016-09-27
CPC Classification: G11C,H01L

Claim Text:
1. A magnetic device comprising: a first magnetic layer having a uniaxial anisotropy with an easy magnetisation axis in a plane of said first magnetic layer and having a magnetisation of variable direction having two positions of equilibrium along said easy magnetisation axis; a second magnetic layer having a magnetisation perpendicular to that of said first magnetic layer and situated out of plane of the second magnetic layer; a device configured to make circulate in the layers, and perpendicularly thereto, a current pulse to switch from one position of equilibrium of the direction of magnetisation of the first magnetic layer to the other, and a device configured to apply a transverse magnetic field, a direction of which is substantially parallel to the plane of said first magnetic layer and substantially perpendicular to the easy magnetisation axis of the first magnetic layer, wherein said device configured to make a current pulse circulate and said device configured to apply a transverse magnetic field are configured such that a scalar product ({hacek over (J)}×{hacek over (M)} wherein the amplitude of the writing current pulse and that of the transverse magnetic field are chosen to switch the magnetisation of the first magnetic layer from one position of equilibrium to another position of equilibrium, the final state of the magnetisation of the first magnetic layer being controlled by the direction of the current pulse passing through the stack, independently of its initial state and the duration of the writing current pulse.