Magnetic properties of the amorphous Co70Cr20Zr10 alloys near the Curie temperature are reported. The behavior is found to obey second-order phase transition laws with critical indices: β=0.45 ± 0.02, γ= 1.9 ±0.1, δ = 5.13±0.05, and the ferromagnetic Curie temperature Tc= (186.7±0.2)K. The critical indices satisfy the scaling law relationship γ = β(δ- 1), but their values deviated with the 3D-Heisenberg model. This behavior may arise from the magnetically inhomogeneous behavior of the alloy. Finally, the temperature dependence of the Kouvel-Fisher exponent γ(T) is discussed.
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