The magnetic characteristics have been measured to obtain the amorphous alloy with lower coercive force and higher saturated magnetic induction. The amorphous thin ribbons were heat-treated at temperatures of range of 250-550℃ in the magnetic field. The coercive force of ribbons became lower with increasing heat-treatment temperature, but the coercive force increased when exceeded an optimum heat-treatment temperature. The best magnetic properties were The saturated magnetic obtained at temperature just under a crystallization temperature. induction of ribbons showed the values of about 1.6T.

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