Compound core element having a pair of uniaxial anisotropic ferr

Details Compound core element having a pair of uniaxial anisotropic ferr Compound core element having a pair of uniaxial anisotropic ferr

1991-04-30

1992-07-07

Wieder, Kenneth A.

Electricity: measuring and testing

Magnetic

Magnetometers

324173, 32420715, G01R 3302

Patent

active

051286149

ABSTRACT:
A magnetic-field-sensitive device includes several magnetic-field sensors. Each sensor comprises a compound element surrounded by a coil winding. Each compound element is made of two ferromagnetic cell components extending in one axial direction with uniaxial magnetic anisotropy and with different coercive field strengths. A spontaneous reversal of magnetization is produced by an external magnetic switching field only in the cell component having the lower coercive field strength. The magnetic-field sensors are combined to form a series arrangement, or array, and the coil windings and cell components of the magnetic-field sensors of the array are formed as thin-film structures on a non-magnetic substrate.

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Siemens Prospectus: "SIPLUS-Drehzahlgeber mit Impulsdraehten" (SIPLUS-Speed Sensors with Pulse Wires), no date.

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