Alloys of Al₅₀{Mn}₂₀Si₃₀ and Al₅₅{Mn}₂₀Si₂₅ have been prepared by rapid quenching from the melt onto a single Cu roller. As-quenched alloys have been found to be fully amorphous. This amorphous phase crystallizes at approximately 600 K. Alloys annealed below the crystallization temperature transform into single-phase icosahedral quasicrystals. Both the amorphous and quasicrystalline phases are weakly ferromagnetic with Curie temperatures around 120 K and saturation magnetization in the order of 0.1 emu/g.
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Dunlap et al. (1989) studied this question.
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