Abstract
The microstructural (XRD and SEM) and dielectric behavior of Pb(Zr0.54Ti0.46)O3 (PZT 54/46) ceramic system with donor (La, Nb and La+Nb) doping was studied. For all Nb-doped PZT samples, only one (tetragonal) phase was found, which confirms the compositional shifts near the morphotropic phase boundary. For La- and La+Nb-doped samples, there are two (rhombohedral and tetragonal) phases. Dielectric characteristic behavior (1/ε) for La- and La+Nb-doped PZT was associated with two-phase transitions: Ferro–Ferro at low temperature and Ferro–Para at Curie temperature. For Nb-doped samples, only one phase transition is observed, which indicates the presence of a single ferroelectric phase.
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Durruthy-Rodríguez, M.D., Pérez-Fernández, L.D., Peláiz-Barranco, A. et al. Structural and dielectric characteristics of donor dopants in A and B places of perovskite ceramic PZT 54/46. Appl. Phys. A 95, 423–428 (2009). https://doi.org/10.1007/s00339-008-4889-0
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DOI: https://doi.org/10.1007/s00339-008-4889-0