Abstract
We report dynamical scaling analysis of the ac magnetic susceptibility data for the quasicrystalline A1 75 Mn 20 Si 5 alloy near the critical temperature T. The critical exponents obtained are β = 1.0 and zν = 5.5. The value of β is higher than that obtained from static scaling analysis made in the decagonal Al 78 Mn 22 alloy which yielded β = 0.6 and γ = 4.4. The overall values obtained for the critical exponents are similar to those measured in canonical spin-glass systems.
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