Abstract

Sm–Fe binary alloy with the hard magnetic Sm 5Fe 17 phase was produced by melt-spinning followed by heat treatment. The magnetic properties of the Sm–Fe melt-spun ribbon depended on the annealing temperature. The highest coercivity, i H c = 1.90 MA m −1, was obtained by annealing the Sm–Fe melt-spun ribbon for 1 h at 923 K. The coercivity of the Sm 5Fe 17 melt-spun ribbon was attributed to the grain size of the hard magnetic Sm 5Fe 17 phase.

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