Dielectric properties and phase transition of polycrystalline lead zirconate titanate-lead cobalt niobate
The binary system of lead zirconate titanate Pb(Zr1/2Ti1/2)O3, PZT and lead cobalt niobate Pb(Co1/3Nb2/3O3, PCoN was fabricated using a high temperature solid state reaction method. The structure and homogeneity of the ceramics obtained have been investigated using x-ray diffraction. The morphology of the ceramics was characterized by scanning electron microscopy (SEM). The results indicated that the presence of PCoN in the solid solution decreases the structural stability of PZT perovskite phase. A transition from tetragonal to pseudo-cubic phase was observed as PCoN increased and the co-existence of tetragonal-pseudo-cubic phases occurred at composition with x=0.3. The permittivity showed a ferroelectric to paraelectric phase transition at 236℃ with a maximum value=39000 at 100Hz at the morphotropic phase boundary (MPB) composition.
Naratip Vittayakorn Tawee Tunkasiri
Materials Science Research Unit, Department of Chemistry, Faculty of Science, King Mongkuts Institu Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
国际会议
第二届功能原料国际研讨会(The 2rd International Symposium on Functional Materials)
杭州
英文
199-204
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）