Magnetic sensor device and magnetic sensing method
AssigneeInfineon Technologies AG
InventorsDieter Suess, Hubert Brueckl, Klemens Pruegl, Wolfgang Raberg, Armin Satz
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Abstract
The present disclosure relates to a magnetic sensor device having at least one magneto-resistive structure. The magneto-resistive structure comprises a magnetic free layer configured to generate a closed flux magnetization pattern in the free layer, and a magnetic reference layer having non-closed flux reference magnetization pattern; and a magnetic flux concentrator configured to increase a flux density of an external magnetic field in the magnetic free layer.
Claims20
A magnetic sensor device, comprising:
- at least one magneto-resistive structure comprising
- a magnetic free layer configured to generate a closed flux magnetization pattern in the free layer, and
- a magnetic reference layer having non-closed flux reference magnetization pattern;
- and
- a magnetic flux concentrator configured to increase a flux density of an external magnetic field in the magnetic free layer.
A magnetic sensor device, comprising:
- a magnetic flux concentrator;
- and
- a plurality of magneto-resistive sensor elements arranged proximate the magnetic flux concentrator, each magneto-resistive sensor element comprising a respective magnetic free layer configured to generate a vortex magnetization pattern in the respective magnetic free layer.
A magnetic sensing method, comprising:
- increasing a magnetic flux density of an external magnetic field in a magnetic free layer of at least one magneto-resistive structure, the magnetic free layer comprising a vortex magnetization pattern, by arranging the magnetic free layer proximate a magnetic flux concentrator.
Dependencies are inferred from the claim text.