Barkhausen Noise Sensor with Direct Field Control
Alexandr Stupakov · Sensor Letters · 2013
The objective of the presented work was to introduce the principles of direct field control into measurements of magnetic Barkhausen noise. A mobile BN sensor with Hall elements for direct field measurement was constructed for local testing of magnetically open samples. A new promising parameter, Barkhausen noise coercivity, was proposed to use in practice. It was proved to be more stable to the measurement conditions than most of the classical Barkhausen noise quantities. The parameter demonstrated a linear correlation to the hysteresis coercive force.