| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1907 - C8-1908 | |
| DOI | https://doi.org/10.1051/jphyscol:19888865 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1907-C8-1908
DOI: 10.1051/jphyscol:19888865
1 Istituto Elettrotecnico Nazionale Galileo Ferraris and CISM-MPI, I-10125 Torino, Italy
2 Istituto Elettrotecnico Nazionale Galileo Ferraris and CISM-MPI, I-10125 Torino, Italy,
3 Dip. Fisica, Politecnico di Torino, I-10124 Torino, Italy
J. Phys. Colloques 49 (1988) C8-1907-C8-1908
DOI: 10.1051/jphyscol:19888865
PHENOMENOLOGY OF BARKHAUSEN EFFECT IN SOFT FERROMAGNETIC MATERIALS
B. Alessandro1, G. Bertotti1 et A. Montorsi2, 31 Istituto Elettrotecnico Nazionale Galileo Ferraris and CISM-MPI, I-10125 Torino, Italy
2 Istituto Elettrotecnico Nazionale Galileo Ferraris and CISM-MPI, I-10125 Torino, Italy,
3 Dip. Fisica, Politecnico di Torino, I-10124 Torino, Italy
Abstract
We present results on Barkhausen noise power spectrum in polycrystalline 3 % SiFe, measured in the central part of the hysteresis loop as a function of permeability µ and magnetization rate I, in the range 2.6 x 103 ≤ µ / µ0 ≤ 5.5 x 104, 1.5 x 10-4Ts-1 ≤ I ≤ 5 Ts-1. The parameters describing the spectrum shape exhibit definite power law dependences on both µ and I.