Impedance and Dielectric Properties of Nb-Doped Pb(Zr0.52Ti0.48)O3 Ceramics

Piyachon Ketsuwan; Athipong Ngamjarurojana; Yongyut Laosiritaworn; Supon Ananta; Rattikorn Yimnirun; David P. Cann

doi:10.4028/www.scientific.net/AMR.55-57.129

Paper Titles

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Microstructures of Zirconium Titanate Powders and Ceramics Prepared by Solid-State Mixed Oxide Method
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 55-57Impedance and Dielectric Properties of Nb-Doped...

Impedance and Dielectric Properties of Nb-Doped Pb(Zr_0.52Ti_0.48)O₃ Ceramics

Abstract:

The compositions of Pb(Zr0.52Ti0.48)O3 doped with 1-6 mole% Nb content were prepared by a conventional mixed oxide technique. It was found that the phase formed depended on the dopant concentration. At lower concentration, the dominate phase was the tetragonal. With increasing Nb content the rhombohedral phase tended to increase. Furthermore, the Curie temperature (Tc) and dielectric constant decreased with increasing Nb concentration and the dielectric maximum peaks were broadened with more rhombohedral phase presence, causing the diffused ferroelectric-paraelectric phase transition. The impedance of the samples decreased with increasing temperature and it was also observed that the impedance increased with increasing Nb concentration.