Abstract
The reentrant spin glasses (RSG) in amorphous transition metals are examined on the basis of the finite-temperature theory of amorphous metallic magnetism. It is shown that a competition between the short-range ferromagnetic couplings and the long-range antiferromagnetic couplings forms the itinerant-electron RSG via the structural disorder characteristic to the amorphous pure metals. Calculated high-field susceptibilities, forced volume magnetostriction, and T-p phase diagram explain well the experimental data of Fe-rich amorphous alloys around 90 at.% Fe. This supports that the RSG around 90 at.% Fe in Fe-rich amorphous alloys are dominated by the structural disorder.
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