Abstract
The magnetic properties of (Fe0.82B0.18)0.9Tb0.05La0.05 in both the amorphous and crystallized states are presented. When amorphous, the alloy is magnetically soft and has a low coercive force, comparable to the corresponding alloy without rare earths. Upon annealing near the crystallization temperature of 900 K, however, the intrinsic coercive force at 300 K rises to 9 kOe, with a remanent magnetization of slightly less than 5 kG. In the amorphous state this and related alloys appear to have potential for use in devices requiring large, isotropic magnetostriction, while in the crystallized state they appear potentially useful as low cobalt permanent magnets.
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