Mössbauer spectroscopy studies of Dy(Fe,M)12 (M=Si,V,Ti) alloys

The⁵⁷Fe Mössbauer spectra have shown that the hyperfine field of DyFe₁₀Si₂ alloy and its quadrupole splitting at the 8i sites change steeply at 210 K, which are attributed to the spin reorientation transition. The stabilizing elements for the formation of the ThMn₁₂-structure can affect on the spin reorientation transition temperature. The differences of spin reorientation transition temperature of DyFe₁₀Si₂, DyFe₁₀V₂ and DyFe₁₁Ti alloys had been discussed. The quadrupole splitting at 8i sites of DyFe₁₀Si₂ alloy changes its sign at 210 K.