EN
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 ThMn_{12}-type structure. An increase in the saturation magnetization, the Curie temperatures and magnetocrystalline anisotropy in the Si substitutional systems is observed when compared with DyFe_{12-x}V_{x}. The magnetic properties depend on the preferential site occupation and concentration of Si and V atoms in these compounds.