SYNTHESIS AND CHARACTERIZATION OF PLZT(9 65/35) BY THE PECHINI METHODAND PARTIAL OXALATE/

ZrTiO4 (ZT), obtained by the Pechini method, was used as precursor for obtaining PLZT (lead lanthanum zirconium titanate). An aqueous soluti on of oxalic acid was prepared with particles of ZT, Pb(NO3)(2) and La 2O3. After the PbC2O4 and La2O3 precipitate on ZT particles, the mater ials were calcined and X-ray diffraction (XRD) showed the cubic phase of PLZT. This material was sintered, in two steps, and a density of ab out 8.0 g/cm(3) was obtained. After the second sintering the XRD patte rn showed the occurrence of tetragonal and rhombohedral phases. This w as caused by a stoichiometric deviation and the material showed a high optical transparency. (C) 1998 Elsevier Science B.V. All rights reser ved.