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

Journal Article · Sat Jan 15 00:00:00 EST 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1831552· OSTI ID:20665000

Rivas, M; Garcia, J A; Tejedor, M; Bertran, E; Cespedes, J G ^[1]

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1. Departamento de Fisica, Universidad de Oviedo, 33204 Gijon (Spain)

Partial crystallization of the metallic glass Co{sub 66}Si{sub 16}B{sub 12}Fe{sub 4}Mo{sub 2} was performed by annealing at temperatures between 500 and 540 deg. C for 10-20 min, resulting in crystallite volume fractions of (0.7-5)x10{sup -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.

• OSTI ID: 20665000
• Journal Information: Journal of Applied Physics, Vol. 97, Issue 2; Other Information: DOI: 10.1063/1.1831552; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
BORON ALLOYS
COBALT ALLOYS
COERCIVE FORCE
CRYSTALLIZATION
ELECTRONS
EXCHANGE INTERACTIONS
FERROMAGNETIC MATERIALS
HYSTERESIS
IRON ALLOYS
MAGNETIC CORES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIZATION
METALLIC GLASSES
MOLYBDENUM ALLOYS
PULSES
SILICON ALLOYS
TEMPERATURE RANGE 0400-1000 K
TRANSFORMERS