Selective synthesis and magnetic properties of iron silicide (Fe3Si and FeSi) at low temperature

Abstract

In this study, iron silicide (Fe₃Si and FeSi) particles have been selectively synthesized through a solid-state reaction route. The reactions are carried out at 650 °C in a stainless steel autoclave using iron sesquioxide (Fe₂O₃), elemental silicon and active metals (magnesium and lithium) as reactants. The experimental results show that active metals are an important factor influencing the phase of the products. In addition, the magnetic properties of the products have been investigated. This method can provide a general route for the selective synthesis of other transition metal silicides.