Structural and magnetic properties of Sr2NiMO6(M=W, Mo).

Here, We report the Structural and magnetic Properties of double perovskite Sr2NiMO6(M=W,Mo). The Polycrystalline samples Sr2NiMoO6(SNMO) and Sr2NiWO6(SNWO) were synthesized using Solid state reaction method. By employing X-ray powder diffraction and Rietveld analysis, we unveiled that both SNMO and SNWO samples adopt a tetragonal structure with the I4/m space group. Temperature dependence of magnetization measurement determined that both SNMO and SNWO samples undergoes the transition from paramagnetic to antiferromagnetic transition around 74.2K and 58K respectively. Upon subjecting both samples to a magnetic field, an antiferromagnetic nature is evident. Notably, SNMO exhibits an additional ferromagnetic nature at lower temperature. We also have fitted Modified Curie-Wiess law from which we got Curie temperature are −254.59K and −160.5K, and effective magnetic moment(μeff) are 4.18 µB/f.u. and 3.8 µB/f.u. for both samples SNMO and SNWO respectively. These comprehensive insights contribute to a deeper understanding of the magnetic behaviors exhibited by SNMO and SNWO. [ABSTRACT FROM AUTHOR]