Sensor device having a magnetostrictive force sensor

Details Sensor device having a magnetostrictive force sensor Sensor device having a magnetostrictive force sensor

2006-01-24

2006-01-24

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

C073S763000, C073S774000, C324S207210

Reexamination Certificate

active

06988414

ABSTRACT:
A sensor device having a magnetostrictive force sensor is provided. To detect a force, the sensor device contains a TMR force sensor element having a magnetic detection layer of material having a magnetostriction coefficient λ≧|5·10−6|, a magnetically harder reference layer, and a tunnel barrier disposed between these layers. Established in the detection layer is a starting magnetization that relative to the magnetization of the reference layer, which is directed in the direction of force, forms an angle of other than 0° and thus is rotated out of its starting position under the effect of the force.

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