Model for the correlation between magnetocrystalline energy and Barkhausen noise in ferromagnetic materials

In the present work a model for the correlation between magnetocrystalline anisotropy energy and Barkhausen noise is proposed. The link between the magnetocrystalline anisotropy energy and the magnetic Barkhausen noise is due to the influence of the crystallographic texture on the domain nucleation...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2018-05, Vol.454, p.155-164
Main Authors: Le Manh, Tu, Caleyo, F., Hallen, J.M., Espina-Hernández, J.H., Pérez-Benitez, J.A.
Format: Article
Language:English
Subjects:
Angular position
Anisotropy
Barkhausen effect
Crystallography
Ferromagnetic materials
Grain boundaries
Magnetism
Nanocrystals
Noise
Nucleation
Remanence
Signal processing
Statistical distributions
Stochastic models
Texture
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Summary:In the present work a model for the correlation between magnetocrystalline anisotropy energy and Barkhausen noise is proposed. The link between the magnetocrystalline anisotropy energy and the magnetic Barkhausen noise is due to the influence of the crystallographic texture on the domain nucleation process which produces the Barkhausen signal in the branch from saturation to remanence. The statistical distributions of magnetic free poles and local fields of nucleation and subsequent growth of reversed domains were obtained for a large number of grain boundaries and used to estimate the number and size of Barkhausen events at each angular position from 0 to 360° in ten degree-steps. The good agreement observed between the modeled magnetocrystalline energy and the prediction of this energy made from X-ray texture and Barkhausen noise measurements corroborates the validity of the proposed model.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2018.01.066