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Unlike the orthorhombic phase, the icosahedral phase of Al₈₆{Mn}₁₄exhibits a local magnetic moment. The effective moment of icosahedral-phase Al-Mn and Al-Si-Mn alloys increases with Mn concentration up to a maximum of (1.5±0.5{{μ}}B$). The amorphous and icosahedral phases of Al-Si-Mn have similar magnetic properties for Si concentrations {}6 at. %, and the moments seem to order in a spin-glass state. For Si concentrations {}30 at. %, amorphous Al-Si-Mn orders ferromagnetically.
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Hauser et al. (1986) studied this question.
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