Synthesis and study the physical properties of perovskite (Sr2-x/Gdx)( Co1-y/Cuy)O4 that belongs to the series RUDDLESDEN-POPPER ( RP).

Abstract

 The search for oxidation possesses distinctive properties of superconductivity, ionic conductivity, and many insulating properties that are of great importance in microelectronics and wired and wireless communications are increasing,and one of the most important oxides is perovskite oxides and compounds derived from the perovskite structure of layers called the Ruddlesden and Popper series and which are the main component of solid oxide cells where new oxides belonging to the Ruddlesden and Popper series (A_{n + 1} B_n O_{3n + 1}) are synthesized. It was prepared using the ceramic and Sol-Gel methods. The effect of partial cobalt substitution in the crystal lattice with the transition element Copper was studied and at the same time the partial substitution of Strontium with the element Gadolinium (a rare earth element). The results of X-ray diffraction showed that the prepared oxides crystallized according to the Tetragonal crystalline structure within the I4 / mmm space group at n = 1 and the decrease of the lattice constants a and b and the increase in c and thus the increase of the cell unit size when partial substitution of cobalt with copper and strontium with gadolinium where the oxygen atoms are located in the vacant sites when moving from 2+ oxidation states of strontium to 3+ oxidation states of Gadolinium.