Thin film very high sensitivity magnetoresistive magnetometer ha

Details Thin film very high sensitivity magnetoresistive magnetometer ha Thin film very high sensitivity magnetoresistive magnetometer ha

1992-06-03

1993-11-09

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

324225, 338 32R, G01R 3306

Patent

active

052606538

ABSTRACT:
A thin film magnetometer includes first and second thin film magnetoresistive elements and first and second thin film laminated flux collectors. The first magnetoresistive element is located in a gap formed by the flux collectors, and the second magnetoresistive element is subtantially magnetically shielded by the flux collectors, and acts as a thermistor. The magnetoresistive elements are connected in a bridge circuit whereby any signal component due to thermal effects on the magnetoresistive elements is removed from the signal produced by the first magnetoresistive element.

REFERENCES:
patent: 3546579 (1970-12-01), Paul et al.
patent: 4783711 (1988-11-01), Kitada et al.
patent: 4954216 (1990-09-01), Hunter et al.
patent: 4954920 (1990-09-01), Yamada et al.
patent: 5021909 (1991-06-01), Shiiba
patent: 5119025 (1992-06-01), Smith et al.
Gebhardt et al., "A Magnetoresistive Permalloy Magnetic Field Sensor" Experimentelle Technik der Physik 30 (1982) 4, pp. 363-367.

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