Magnetic spin polarisation and magnetisation rotation device with memory and writing process, using such a device
First Claim
Patent Images
1. Magnetic device consisting of a first magnetic layer (12, 62) called the “
- anchored”
layer which has a fixed magnetisation direction, a second magnetic layer (16, 66) called the “
free”
layer which has a variable magnetisation direction, an insulating or semi-conducting layer (14, 64) which separates the anchored layer (12, 62) from the free layer (16, 66), means (24, 74, 26, 76) for passing a current of electrons through and perpendicular to the layers, means for polarising the spin of the electrons, characterised in that the means for polarising the spin of the electrons include at least one magnetic layer (20, 70) whose magnetisation is perpendicular to the plane of the magnetisation of free layer (16, 66), this magnetic polarisation layer (20, 70) being separated from the free layer (16, 66) by a non-magnetic conducting layer (18, 64).
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Abstract
Magnetic spin polarising and magnetisation rotation device with memory and writing process, using such a device.
According to the invention, the device includes a means of polarising the spin of electrons, which consists of a magnetic layer (20) whose magnetisation is perpendicular to the plane of magnetisation of the respective anchored (12) and free (16) layers. The magnetisation in the free layer (16) then rotates within a plane, which is either the plane of the layer, or a perpendicular plane.
Application in the manufacture of magnetic memories.
137 Citations
13 Claims
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1. Magnetic device consisting of
a first magnetic layer (12, 62) called the “ - anchored”
layer which has a fixed magnetisation direction,a second magnetic layer (16, 66) called the “
free”
layer which has a variable magnetisation direction,an insulating or semi-conducting layer (14, 64) which separates the anchored layer (12, 62) from the free layer (16, 66), means (24, 74, 26, 76) for passing a current of electrons through and perpendicular to the layers, means for polarising the spin of the electrons, characterised in that the means for polarising the spin of the electrons include at least one magnetic layer (20, 70) whose magnetisation is perpendicular to the plane of the magnetisation of free layer (16, 66), this magnetic polarisation layer (20, 70) being separated from the free layer (16, 66) by a non-magnetic conducting layer (18, 64). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- anchored”
Specification