Statistical characterization of Barkhausen noise

Abstract
We investigate whether Barkhausen noise exhibits self-organization and precursor events in the manner of the sandpile models used to illustrate self-organized criticality, and the extent to which Barkhausen noise can be described by single-domain wall pictures. Although a few large time-asymmetric events are found, no precursor effects were observed. Standard single-degree-of-freedom models appear to describe most of the data.