Synthesis, structural characterization, electric and magnetic behaviour of a Sr2DyNbO6 double Perovskite

Many multifunctional properties have been the focus of our interest in Perovskite research. Herein, we report synthesis and characterization of a new Sr2DyNbO6 Perovskite-like material. Samples were produced via standard solid-state reaction method. Rietveld refinement of X-ray diffraction experimental data through the GSAS code reveals that this material crystallizes in a monoclinic complex Perovskite (space group P21 n, #14) with lattice parameters a=5.730(3) Å, b=5.905(1) Å and c=8.221(0) Å. Scanning electron microscopy images reveal that samples evidence a surface with strongly diffuse granular structure. From curves of magnetization as a function of temperature, we determined the paramagnetic behaviour of this complex Perovskite in the temperature regime between 50 and 320 K. Curie fitting allows obtaining an effective magnetic moment of 10.28 μB. Polarization curves as a function of the applied electric field show a hysteretic behavior of typical dielectric loss with relative dielectric constant of 264.28 at room temperature.