Abstract
Al-based amorphous and quasicrystalline alloys have been prepared by high-rate sputtering and melt-quenching, respectively. The Al 67 Cu 20 Mn 13 crystalline approximant phase also has been made by annealing the quasicrystalline counterpart. The formation of the localized magnetic moments of 3d metals in the Al matrix is difficult except for Mn. The ratio of the magnetic Mn atoms estimated from the saturation magnetization and the Curie constant in the quasicrystalline phase is smaller than that in the amorphous phase. In the crystalline approximant phase, the ratio is comparable to that in the amorphous phase, but the average magnetic moment of magnetic Mn atoms is much smaller than that in the amorphous and quasicrystalline phases
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