Crystallization and Magnetic Properties of Melt-Spun SmCo7-x(Cr3C2)x Alloys

Li Ya Li; Jian Hong Yi; Yuan Dong Peng

doi:10.4028/www.scientific.net/AMM.321-324.125

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 321-324Crystallization and Magnetic Properties of...

Crystallization and Magnetic Properties of Melt-Spun SmCo_7-x(Cr₃C₂)_x Alloys

Abstract:

The amorphous formation ability, crystallization behavior and magnetic properties of SmCo₇ magnets melt-spun at 30 and 40 m/s have been studied. The ribbons melt-spun at 40 m/s exhibit amorphous structure in the range of 0.15x0.25 for SmCo_7-x(Cr₃C₂)_x alloys. In the amorphous state, these alloys are soft magnetic with intrinsic coercive field _iH_c of the order of 40-70 Oe. After annealing at 750 °C for 5 min, the alloy shows enhenced magnetic properties with _iH_cof 7.98 kOe, M_r of 55.05 emu/g, and M_r of 70.99 emu/g. The MFM image reveals a uniform distribution of individual grains with average size about 20 nm and a domain size about 100250 nm in width. This interaction domain results in the enhancement of the magnetic properties.

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Periodical:

Applied Mechanics and Materials (Volumes 321-324)

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125-128

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.321-324.125

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Online since:

June 2013

Authors:

Li Ya Li, Jian Hong Yi, Yuan Dong Peng

Keywords:

Amorphization, Crystallization, Magnetic Property, SmCo₇

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