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Title: Influence of the dipolar interactions in the magnetization reversal asymmetry of hard-soft magnetic ribbons
Author: Rivas Ardisana, Montserrat
García Díaz, José Ángel
Tejedor Gancedo, Marcos
Bertrán Serra, Enric
Céspedes, J. G.
Keywords: Ferromagnetisme
Propietats magnètiques
Microscòpia electrònica
Magnetic properties
Electron microscopy
Issue Date: 23-Dec-2004
Publisher: American Institute of Physics
Abstract: Partial crystallization of the metallic glass Co66Si16B12Fe4Mo2 was performed by annealing at temperatures between 500 and 540°C for 10-20 min, resulting in crystallite volume fractions of (0.7-5)×10¿3 and sizes of 50-100 nm. This two-phase alloy presents a remarkable feature: a hysteresis loop shift that can be tailored by simply premagnetizing the sample in the adequate magnetic field. Shifts as large as five times the coercive field have been obtained which make them interesting for application as magnetic cores in dc pulse transformers. The asymetrical magnetic reversal is explained in terms of the magnetic dipolar field interaction and the observed hysteresis loops have been satisfactorily simulated by a modification of Stoner-Wohlfarth¿s model of coherent rotations.
Note: Reproducció del document publicat a:
It is part of: Journal of Applied Physics, 2005, vol. 97, núm. 2, p. 023903-1-023903-5
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ISSN: 0021-8979
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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