Barkhausen avalanches in anisotropic ferromagnets with 180° domain walls

Publikationstyp: Zeitschriftenartikel
URI (zitierfähiger Link): http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-89275
Autor/innen: Tadić, Bosiljka; Nowak, Ulrich
Erscheinungsjahr: 2000
Erschienen in: Physical Review E ; 61 (2000), 4. - S. 4610-4613
DOI (zitierfähiger Link): https://dx.doi.org/10.1103/PhysRevE.61.4610
Zusammenfassung:
We show that Barkhausen noise in two-dimensional disordered ferromagnets with extended domain walls is characterized by the avalanche size exponent t s51.54 at low disorder. With increasing disorder the characteristic domain size is reduced relative to the system size due to nucleation of new domains and a dynamic phase transition occurs to the scaling behavior with t s51.30. The exponents decrease at finite driving rate. The results agree with recently observed behavior in amorphous Metglas and Fe-Co-B ribbons when the applied anisotropic stress is varied.
PACS-Klassifikation: 05.40.Ca; 75.60.Ej; 05.65.1b; 68.35.Ct
Fachgebiet (DDC): 530 Physik
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TADIĆ, Bosiljka, Ulrich NOWAK, 2000. Barkhausen avalanches in anisotropic ferromagnets with 180° domain walls. In: Physical Review E. 61(4), pp. 4610-4613. Available under: doi: 10.1103/PhysRevE.61.4610

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