“…22,23 Another alternative to avoid pyrochlore is tailoring synthesis methods to change the chemical characteristics of the reactants. Xu et al 24 developed a particle coating method in which a magnesium citrate polymeric complex prevents direct contact between PbO and Nb 2 O 5 and thus avoids the formation of pyrochlore. Yu et al 25 synthesized PMN-PT perovskite single phase by introducing polyethylene glycol to a mixture of MgO, PbO, Nb 2 O 5 and TiO 2 .…”