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J. Korean Ceram. Soc. > Volume 31(12); 1994 > Article
Journal of the Korean Ceramic Society 1994;31(12): 1443.
PMN-PT-BT 고용체의 합성반응기구
박현, 이응상
한양대학교 무기재료공학과
Reaction Mechanism in the Formation of PMN-PT-BT Solid Solution
ABSTRACT
Pb(Mg1/3Nb2/3)O3-PbTiO3-BaTiO3 solid solution was formed by mixed-oxide method. The phase during formation was analysed by XRD and formation mechanism was investigated. While heat-treating Pb(Mg1/3Nb2/3)O3 composition, the first, Pb2Nb2O7 and Pb3Nb2O8 pyrochlore phases are formed, and finally Pb(Mg1/3Nb2/3)O3 perovskite phase with containing Pb3Nb4O13 pyrochlore phase is obtained at 80$0^{circ}C$. When Pb(Mg1/3Nb2/3)O3 composition is modified with PbTiO3 which have strong ionic bonding and high tolerance factor, the amount of pyrochlore phase is decreased by increasing of stability in perovskite structure.
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