Continuous vectorial magnetometer with capacitive magnetostricti

Details Continuous vectorial magnetometer with capacitive magnetostricti Continuous vectorial magnetometer with capacitive magnetostricti

1988-12-15

1990-04-10

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

33363Q, 324260, 324686, G01R 3302, G01R 33022, G01R 2726

Patent

active

049163930

ABSTRACT:
Continuous vectorial magnetometer having a magnetostrictive pickup including a capacitive pickup which contains a capacitor at least one of whose electrodes is constituted of a material having magnetostrictive properties, and means for measuring the variation of the capacity of the said capacitive pickup under the action of an external magnetic field. The invention also relates to a gradiometer entailing the application of two capacitive pickups of the kind used in a magnetometer. The magnetometer is applied to the measurement of continuous or slowly varying magnetic fields, and the gradiometer to the measurement of a magnetic field gradient.

REFERENCES:
S. Yoshino, et al., "Measurement of Magnetostriction of Amorphous Dy-Fe Films by Cantilever Capacitance Method", Japanese Journal of Applied Physics, vol. 21, No. 10, Oct. 1, 1982, pp. 1527-1528.
E. du Tremolet de Lacheisserie, et al., "An Improved Capacitance Method of Measuring Thermal Expansion and Magnetostriction of Amorphous Ribbons: Application to FeNiCr Metallic Glasses", Revue de Physique Appliquee, vol. 18, No. 11, Nov., 1983, pp. 727-730.
T. Sonoda, et al., "Field and Force Sensors Using Amorphous Ribbons", 1986 Digests of Intermag '86--International Magnetics Conference, Apr. 14-17, 1986, p. FD-2.
Z. A. Kazei, et al., "A Capacitance Transducer for Measuring the Magnetrostriction of Small Specimens at 4.2oK", Instruments and Experimental Techniques, vol. 25, No. 1, part 2, pp. 223-225.

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