Hamzioui Louanes, Kahoul Fares, Abdessalem Nora, Boutarfaia Ahmed
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DOI: 10.4236/msa.2012.31007   PDF    HTML   XML   4,053 Downloads   7,149 Views   Citations

Abstract

The effects of P₂O5 oxide on microstructure, dielectric and piezoelectric properties of Pb_0.98Ca_0.02[{(Zr_0.52Ti_0.48)_0.98( Cr³⁺_1/2,Ta⁵⁺_1/2)_0.02}_1–zP_z]O₃ ternary ceramics were investigated. Specimens with various contents of P₂O₅ from 0 to 12 wt. % were prepared by a conventional oxide mixing technique. The effect of P₂O₅ doping with regard to the development of the crystalline phase, density, microstructure, dielectric, ferroelectric and piezoelectric characteristics has been investigated. It has been found that the sintering temperature of piezoelectric Pb_0.98Ca_0.02[{(Zr_0.52Ti_0.48)_0.98(Cr³⁺_1/2,Ta⁵⁺_1/2)_0.02}_1–zP_z]O₃ can be reduced by phosphorus addition without compromising the dielectric properties. A sintered density of 94 % of the theoretical density was obtained for 4 wt. % P₂O₅ addition after sintering at 1050°C for 4 h. Ceramics sintered at 1050°C with 4 wt. % P₂O₅ achieve excellent properties, which are as follows: kp = 0.73, ρ = 0.09 × 10⁺⁴ (Ω. cm), εr = 18800, tanδ = 0.0094 and Tc = 390°C.

Keywords

PZT; Piezoelectricity; Electronic Materials; Dielectric Properties; Methods Physico-Chemical of Analysis

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Conflicts of Interest

The authors declare no conflicts of interest.

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