The average shape of the pulse in Barkhausen noise has been recently proposed as a tool to compare models and experiments. We compute theoretically the pulse shape of Barkhausen noise in a model describing the motion of a domain wall in an effective Brownian potential. In this framework, the pulse shape is related to the properties of the excursion of a random process in a clog(x)−kx potential. We record the Barkhausen noise in polycristalline FeSi materials, and compare the pulse shape with the one predicted by the domain wall model.
Cite
@article{arxiv.cond-mat/0507296,
title = {Shape of a Barkhausen pulse},
author = {F. Colaiori and S. Zapperi and G. Durin},
journal= {arXiv preprint arXiv:cond-mat/0507296},
year = {2015}
}