Synthesis, Morphology and Structural Properties of (Gd,Nd)Sr2RuCu2Ox Samples

NdSr2RuCu2Ox material has been prepared as polycrystalline powder by solid state reaction. The compound has been investigated by synchrotron x-ray powder diffraction and scanning electron microscopy. The experimental results show that the average crystal structure is a disordered cubic perovskite with Nd and Sr cations occupying the same site and the same substitution is found for Cu and Ru atoms. A comparison between the crystal structure and morphology of this compound and the superconducting tetragonal GdSr2RuCu2O8 is also discussed.