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A new amorphous ribbon fluxgate sensor based on torsional-creep-induced anisotropy

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4 Author(s)
Nielsen, O.V. ; Dept. of Electrophys., Tech. Univ. of Denmark, Lyngby, Denmark ; Gutierrez, J. ; Hernando, B. ; Savage, Howard T.

The fluxgate sensor presented consists of a hairpin-shaped nonmagnetostrictive amorphous metal ribbon which carries the excitation AC current. Even harmonics are induced in a surrounding coil, which can be used both as a pickup coil and as a field compensation coil. The principle of operation is similar to that of a traditional ring-core system except that the core itself carries the excitation current. The sensor competes favorably with traditional fluxgate sensors with respect to simplicity, miniaturization, signal level, and noise level

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Magnetics, IEEE Transactions on  (Volume:26 ,  Issue: 1 )