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 c log (x) - kx potential. We record the Barkhausen noise in polycrystalline FeSi materials, and compare the pulse shape with the one predicted by the domain wall model.
Shape of a Barkhausen pulse / F. Colaiori, S. Zapperi, G. Durin. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - 272:Suppl. 1(2004), pp. e533-e534.
Shape of a Barkhausen pulse
S. Zapperi;
2004
Abstract
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 c log (x) - kx potential. We record the Barkhausen noise in polycrystalline FeSi materials, and compare the pulse shape with the one predicted by the domain wall model.
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