The magnetostrictive member is formed of a single crystal of an iron-based alloy having magnetostrictive characteristics, is a plate-like body having a long-side direction and a short-side direction, and has a lattice constant of a <100> orientation in the short-side direction larger than a lattice constant of a <100> orientation in the long-side direction.

The present disclosure relates to a wide-range perpendicular sensitive magnetic sensor and the method for manufacturing the same, the magnetic sensor includes a substrate, a plurality of magnetic tunnel junctions, a plurality of magnetic flux regulators, a first output port and a second output port.

The present disclosure relates to a wide-range perpendicular sensitive magnetic sensor and the method for manufacturing the same, the magnetic sensor includes a substrate, a plurality of magnetic tunnel junctions, a plurality of magnetic flux regulators, a first output port and a second output port.

The invention relates generally to electroactive material actuators (and combined sensor-actuators) having embedded magnetic particles (42) for facilitating enhanced actuation and/or sensing effects.

The magnetoelastic torque sensor includes a shaft that is magnetized in a first axial section in a first circumferential direction and to which a torque to be measured can be applied; a first magnetic field sensor outside of the shaft for recording a magnetic field, which is generated by the first section of the shaft and independent of the applied torque. The first magnetic field sensor comprises a first 3D Anisotropic MagnetoResistance (3D-AMR) sensor.

A motor unit including a drive motor that includes an output shaft having a hollow portion; a torque sensor arranged within the hollow portion; and a cooling mechanism. The cooling mechanism has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor. A vehicle can include the motor unit. The drive motor can act as a traction motor generating traction drive force of the vehicle.

A sensor unit includes a shaft having a hollow portion and a torque sensor that is arranged inside the hollow portion and detects torsional torque acting on the shaft from inside the shaft. A motor unit can include the sensor unit and a drive motor. A vehicle can include the motor unit. A drive motor can be a traction motor that generates a traction drive force for the vehicle, for example.

A magnetostrictive material includes a FeGaC alloy that is represented by Expression (1),

F.sub.(100-x-y)Ga.sub.xC.sub.y(1) (in Expression (1), x and y are respectively a content rate (at. %) of Ga and a content rate (at. %) of C, and satisfy that y0.5x7.75, yx+20, and y0.5).

A low-cost magnetostrictive torque sensor having a high sensitivity is obtained. A torque sensor 10 includes a substrate 12, a magnetostrictive portion 26, a magnetostrictive portion 28, a detection coil 18a, a detection coil 18b, a detection circuit 48, and a detection circuit 50. The substrate 12 has a tubular shape. Each of the magnetostrictive portions 26 and 28 is constituted by a plating film and disposed on the outer peripheral surface of the substrate 12. The detection coil 18a generates a magnetic flux passing through the magnetostrictive portion 26. The detection coil 18b generates a magnetic flux passing through the magnetostrictive portion 28. Each of the detection circuits 48 and 50 detects a potential between the detection coil 18a and the detection coil 18b.

According to one embodiment, a sensor includes a deformable film portion, and a first sensing element provided at the film portion. The first sensing element includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first and second magnetic layers. The first intermediate layer is nonmagnetic. The first magnetic layer includes a first film including Fe and Co, a second film including Fe and Co, a third film, and a fourth film. The third film includes at least one selected from the group consisting of Cu, Au, Ru, Ag, Pt, Pd, Ir, Rh, Re, and Os and is provided between the first and second films. The fourth film includes at least one selected from the group consisting of Mg, Ca, Sc, Ti, Sr, Y, Zr, Nb, Mo, Ba, La, Hf, Ta, and W and is provided between the third and second films.