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2004-12-23

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/24812

Influence of the dipolar interactions in the magnetization reversal asymmetry of hard-soft magnetic ribbons

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http://dx.doi.org/10.1063/1.1831552

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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.

Matèries

Ferromagnetisme, Anisotropia, Magnetisme, Nanocristalls, Propietats magnètiques, Microscòpia electrònica, Histèresi

Matèries (anglès)

Ferromagnetism, Anisotropy, Magnetism, Nanocrystals, Magnetic properties, Electron microscopy, Hysteresis

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RIVAS ARDISANA, Montserrat, et al. Influence of the dipolar interactions in the magnetization reversal asymmetry of hard-soft magnetic ribbons. Journal of Applied Physics. 2005. Vol. 97, num. 2, pags. 023903-1-023903-5. ISSN 0021-8979. [consulted: 17 of September of 2026]. Available at: https://hdl.handle.net/2445/24812

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