Magnetic Properties of Al-Si-Mn and Al-Mn Quasicrystals and Amorphous Films

Unlike the orthorhombic phase, the icosahedral phase of Al sub 86 Mn sub 14 exhibits 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)Mu sub B. The amorphous and icosahedral phases of Al-Si-Mn have similar magnetic properties for Si concentrations ~ 30 at.%, amorphous Al-Si-Mn orders ferromagnetically.