Magnetic material detecting device

Details Magnetic material detecting device Magnetic material detecting device

1973-02-07

1977-02-01

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

307 88P, 324 43R, G01R 3312, G01R 3302

Patent

active

040064085

ABSTRACT:
A magnetic substance detecting device is disclosed as being capable of parametric oscillation, and including a magnetic sensor formed of an elongated wire with a magnetic thin film plated on the wire, the film being of uniaxial magnetic anisotropy and having a magnetic hard axis in its axial direction and a magnetic easy axis in its circumferential direction. The magnetic substance to be detected is coupled with a magnetic or electrical circuit associated with the magnetic oscillation domain of the magnetic wire of the magnetic sensor to convert the state of the oscillation output of its detecting coil, thus detecting the magnetic substance.

REFERENCES:
patent: 3718872 (1973-02-01), Takeuchi
patent: 3854086 (1974-12-01), Watanabe et al.
Oshima et al., High Sensitivity Plated-Wire Sensor Using Second Harmonic Oscillation & Its Applications, IEEE Tran. on Magnetics, Sept. 1971, pp. 436-437.

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