Abstract: Pb_1-xLa_x)(Zr_yTi_zSn_1-y-z)O₃(PLZST ,0.01≤ x ≤0.05 ; 0.355≤ y≤ 0.70;0.05≤ z≤ 0.20) ceramics with pure complex perovskite phase were fabricated by means of conventional solid state sintering technique. The study shows that it s easier to prepare PLZST ceramics with cubic or orthorhombic structure than those with tetragonal structure. The results also indicate that milling repeatedly, controlling the loss of PbO and sintering at high temperature (1350℃) contribute to the fabrication of the PLZST ceramics with single perovskite phase structure.

Key words: PLZST, complex perovskite structure, fabrication