Induced Pulse Voltage and Hysteresis Loss during Magnetization Reversal of Wiegand Wire

Abstract

  When an alternating magnetic field is applied to a Wiegand wire, a series of pulse voltages are induced in a pickup coil due to fast magnetization reversal known as the large Barkhausen jump. This study aims to analyze the characteristics of the pulse voltage, including its height and area, which are determined from the intensity and frequency of the applied alternating magnetic field. We quantified the energy generated by magnetization reversal in a Wiegand wire. To achieve this, it was necessary to measure the energy consumed by a load resistor connected to the pickup coil. Additionally, we clarified the energy loss in the Wiegand wire.