Abstract
The low-temperature specific heat (CP) and magnetic susceptibility (χ) for the amorphous alloys Fe90Zr10, Co90Zr10, and Co86Zr14 are presented. A very large linear contribution to CP combined with a sharp decrease in χ below about 60 K show Fe90Zr10 to have spin-glass or spin-cluster glass behavior at low temperatures. The Co-based alloys show no deviations from true ferromagnetic behavior at low temperatures. Values of the Debye temperature for all three alloys and the electronic density of states for the Co-based alloys are obtained.
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