Large Barkhausen effect of 6.3% SiFe single crystal wire

A sensitive and stable large Barkhausen effect was observed for 4-8% SiFe single-crystal wires. New pulse generator elements were constructed using 6.3% SiFe single-crystal wire which has nearly zero magnetostriction (λ₁₀₀). Pulse voltage were induced at a pickup coil for an applied AC field of more than about 0.2 Oe with frequencies of 0.01 Hz to 10 kHz. The high reliability of pulse generation characteristics against disturbance stresses was estimated for the 6.3% SiFe single-crystal wire. A reliable and accurate magnetic-field sensor developed on the basis of the proposed technique is described