Itinerant magnetism in metallic glasses

It is argued that when a ferromagnetic transition metal T (e.g. Fe) is mixed with a metalloid M to form a metallic glass (having a narrow band of conduction electrons) the competing effects of the 3-d intra-atomic Coulomb repulsion and of the interaction between conduction and d-electrons make the magnetic moment of T-atoms to vanish when the concentration x of T-atoms is smaller than a critical concentration xc. Experimental data for the magnetic moment of iron atoms in FexB1-x is analyzed along this line and a satisfactory fit is obtained. Inclusion of structural as well as compositional disorder effects could result in a better agreement between theory and experiment. © 1984.

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