Abstract

The authors demonstrate that Fe silicide nanowires can be fabricated from vapor-liquid-solid grown Si nanowire templates. By heating simple Si nanowires with Fe, Fe infuses into Si nanowires through a surface oxide layer and Si nanowires are converted to α-FeSi2 or ε-FeSi partially. Furthermore, when Au catalyst forms Au∕Si heterostructured nanowires, heating with Fe results in the formation of β-FeSi2.

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