The influence of transition metal substitutions on the Curie temperature of as-quenched FeSi10B12-based metallic glasses

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Abstract
The effect of dilute concentrations (below about 10 at.%) of a wide range of transition metal solutes on the Curie temperature, Tc, of as-quenched FeSi10B12-based metallic glasses has been investigated by differential scanning calorimetry. Additions of Co and Pt increase Tc, whilst Pd and Ni have relatively little influence; the remaining solutes decrease Tc, the magnitude of the decrease ranging from about 6K per at.% for Ir to about 39K per at.% for Mo. The influence of Period 4 solute additions on the relative Curie point changes is similar to that observed for corresponding crystalline Ni-based dilute alloys. The behaviour is discussed briefly in terms of the electronic structure and coordination of the alloys.

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