Characterisation of the solid solution La(Ni,Fe)O-3 prepared via a sol-gelrelated method using propionic acid

The paper shows the possible obtaining of the solid solution of LaNiO3 and LaFeO3 by a sol-gel like method with propionate acid as solvent. In order t o understand the role of the precursor nature in function of the starting m aterials on the formation or not of LaNixFe1-xO3, an identification using i nfrared spectroscopy was made. The solid solution formation needs the limit ation of the preferential LaFeO3 in order to permit the introduction of nic kel into the structure. Nitrate salts of iron and lantanum gave pure LaNixF e1-xO3 perovskite with a high homogeneity even at nanoscopic scale. (C) 199 9 Kluwer Academic Publishers.