Effect of Si content on magnetic properties and intersublattice exchange interactions in GdFe11−xSixTi compounds

Abstract Induction melted GdFe 11− x Si x Ti alloys ( x ⩽2) with ThMn 12 -type structure have been investigated. The decrease of Curie temperature, magnetic moment and anisotropy constant are ruled by Si 3p electron transfer into Fe 3d band. The increase of the exchange interaction parameter between Gd and Fe sublattice shows that indirect 3d–4f interaction is enhanced.