Synthesis, Structure and Electric Transport Properties of Sr3WCoO7 and Sr3WNiO7

The Ruddlesden-Popper type phases, which possess the general composition An+1BnO3n+1, are a well known class of materials exhibiting interesting structural and electric transport properties. In the present study two new phases in this class of materials with the composition Sr3WCoO7 and Sr3WNiO7 have been prepared in the solid state by standard ceramic method. X-ray diffraction studies show that these phases crystallize in tetragonal unit cell...