Evidence of hetero-epitaxial growth of Pb(Mg_(1/3)Nb_(2/3))O_3 on the seed particles of a citrate solution

摘要

Citrate solution was employed in preparing Pb(Mg_(1/3)Nb_(2/3))O_3 (PMN) powder from polymeric precursors. BaTiO_3 particles of 600nm average size were used as seed for growing PMN. X-ray diffraction (XRD) indicated the presence of both, pyrochlore Pb_6Nb_6MgO_(22) (P_6N) and perovskite phases. Transmission electron microscopy (TEM) observations indicated that only the PMN phase has hetero-epitaxially grown on the BaTiO_3 seed particles.