Magnetisches Element mit Verbessertem Messbereich

Details

Veröffentlichungs-Nr.

EP3731230

Aktenzeichen

EP19315026

Anmeldetag

23. April 2019

Veröffentlichung

26. Juni 2024

Erteilung

26. Juni 2024

Rechtsraum

EP

IPC

G11C11/16G01R33/09

Abstract

Magnetic element (10) comprising: a magnetic tunnel junction element (2) including a tunnel barrier layer (22) sandwiched between a first ferromagnetic layer (21) having a first magnetization (210) and a second ferromagnetic layer (23) having a second magnetization (230); a field device (40) configured to generate an external magnetic field (42) adapted for varying the orientation of the first magnetization (210) while the orientation of the second magnetization (230) remain unchanged; the first ferromagnetic layer (21) being configured such that the first magnetization (210) comprises a stable magnetization vortex configuration; the first ferromagnetic layer (21) being further configured to comprise an indentation (50) such that a vortex core (211) of the magnetization vortex, upon vortex nucleation or renucleation, is located in the vicinity of the indentation (50) and such that applying the external magnetic field in a first direction moves the vortex core along a first path, the first magnetization rotating around the vortex core in a counterclockwise direction in the plane of the first ferromagnetic layer and applying the external magnetic field in a second direction, opposed to the first direction, moves the vortex core along a second path, the first magnetization rotating around the vortex core in a clockwise direction in the plane of the first ferromagnetic layer, wherein both the first and second path of the vortex core are substantially identical and lead the vortex core away from the indentation.

Anmelder

Firmen

Allegro MicroSystems, LLC
Crocus Technology SA

Land

🇺🇸 USA

Fachgebiete