Synthesis and study the Structural properties of perovskite Sr2 ( Co1-y/Cry)O4 that belongs to series RUDDLESDEN-POPPER ( RP). The

Abstract

Oxides are a cornerstone in the technological revolution from electronics to nanotechnology, so they have received special attention by researchers in materials chemistry because of the large number of these compounds that play an important role in industries, and they are broad families whose physical properties vary from superconductivity and magnetism. Among these families is the family of Perovskites. These compounds are metal oxides with the formula ABO₃, and they include many compounds that have interesting properties of great importance in microelectronics and telecommunications. Compounds derived from the perovskite structure (layered structure) called Ruddlesden and Popper series, the main component of solid oxide cells. In this study, new oxides were synthesized belonging to the Ruddlesden and Popper series (A_n+1 B_n O_3n+1), prepared using the two methods, the ceramic method and the sol-gel method. The effect of partial substitution of cobalt in the crystal lattice with the transition element chromium was studied With different doping ratios. The X-ray diffraction results showed that the prepared oxides crystallize according to the tetragonal crystal structure within the space system I4/mmm at n = 1, and the lattice constants a and b decreased and c increased, thus increasing the size of the unit cell.