An influence of Si on the structural and magnetic properties of
Dy(Fe,V,Si)12 compounds is studied. X-ray diffraction shows that these materials
crystallise in the tetragonal ThΜn12-typae structure. An increase in the
saturation magnetization, the Curie temperatures and magnetocrystalline
anisotropy in the Si substitutional systems is observed when compared with
DyFeι2-xVx . The magnetic properties depend on the preferential site occupation
and concentration of Si and V atoms in these compounds