Parameters and Depth of Penetration of Barkhausen Noise Analysis

摘要

The Barkhausen noise analysis (BNA) method is based on a kind of 'noise' generated by domain wall movements in ferromagnetic solid materials that exhibit hysteresis. These movements create flips which, in turn, create very small discontinuities along the hysteresis curve. The parameters that affect this Barkhausen noise are examined in this report together with the depth of penetration of the BNA method.