公开(公告)号：US20230296703A1

公开(公告)日：2023-09-21

申请号：US18245380

申请日：2021-09-14

Applicant: CROCUS Technology SA

Inventor： Andrey Timopheev ,  Nikita Strelkov ,  Jeffrey Childress

IPC: G01R33/09

CPC classification number: G01R33/098

Abstract: A magnetoresistive element for a 2D magnetic sensor, the magnetoresistive element including a tunnel barrier layer included between a reference layer having a reference magnetization and a sense layer having a sense magnetization. The sense layer includes a sense synthetic antiferromagnetic structure including a first sense sublayer in contact with the tunnel barrier layer and separated from a second sense sublayer by a first non-magnetic spacer layer such that the first sense sublayer is antiferromagnetically coupled to the second sense sublayer. The sense layer is configured such that a sense magnetic ratio ΔM defined as:




Δ
M
=


M

s

F
M
2



t

F
M
2


−
M

s

F
M
1



t

F
M
1




M

s

F
M
2



t

F
M
2


+
M

s

F
M
1



t

F
M
1








wherein MSFM1 and MSFM2 are the spontaneous magnetizations of the first and second sense sublayers and tFM1 and tFM2 are the thicknesses of the first and second sense sublayers; and wherein the sense magnetic ratio is between 0.1 and 0.25.

公开(公告)号：US11017828B2

公开(公告)日：2021-05-25

申请号：US16633775

申请日：2018-06-25

Applicant: Crocus Technology SA

Inventor： Jeremy Alvarez-Herault ,  Lucien Lombard ,  Quentin Stainer ,  Jeffrey Childress

IPC: G11C11/16 ,  H01F7/02 ,  H03K19/18

Abstract: An apparatus for generating a magnetic field including permanent magnets arranged in a plane, each magnet being spatially separated along the plane from the adjacent magnet by a predetermined spacing, each magnet having a magnetic polarity opposed to the polarity of the adjacent magnet such that a magnetic field of adjacent magnets is oriented substantially perpendicular to the plane and in opposite directions, each magnet being spatially separated in the plane from the adjacent magnet by a nonmagnetic material. A method for programming a magnetic device or sensor device using the apparatus is also described.