Preparation of self-doped La1-xMnO3+delta polycrystalline by electrochemical deposition

The perovskite-type self-doped La1-xMnO3+delta was prepared; by heat treatm ent of the gel precursor deposited on a Pt electrode in solutions containin g both La3+ and Mn2+ ions using catholic reduction electrochemical method. The influence of molar ratio of La3+ and Mn2+ in solution,:deposition poten tial and current density on product composition was investigated.. Our resu lts indicate that varying the ratio of La3+ and Mn2+ in solution, depositio n potential or current density can conveniently control the product composi tion, lattice deficiencies and hence the self-doping level, In addition, th e transport properties are mainly influenced by Mn4+ content and ion vacanc ies for the self-doped manganites.