Abstract
The magnetic properties of amorphous alloy CoSUB67/SUBFe₃Cr₃BSUB12/SUBSiSUB15/SUB samples, which were produced by the melt-spinning method and annealed at various temperatures, are analyzed. We found the best annealing temperature for CoSUB67/SUBFe₃Cr₃BSUB12/SUBSiSUB15/SUB was 350 ℃ for 1 hour at 30 mTorr. We also produced a flux-gate magnetometer with the annealed samples with the best magnetic properties. The flux-gate sensor shows a noise level of 2.4 at pT√Hz 1 Hz, and 0.1 nTSUBp-p/SUB in the frequency domain with 1 Hz bandwidth.
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