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Synthesis and Piezoelectric Properties of Pb<sub>0.98</sub>Sm<sub>0.02</sub>[(Zr<sub>y</sub>,Ti<sub>1–y</sub>)<sub>0.98</sub>(Fe<sub>1/2</sub><sup>3+</sup>,Nb<sub>1/2</sub><sup>5+</sup>)<sub>0.02</sub>]O<sub>3</sub> Ceramics

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Author(s): Nora Abdessalem | Ahmed Boutarfaia | Fares Kahoul | Louanes Hamzioui

Journal: Advances in Molecular Imaging
ISSN 2161-6728

Volume: 03;
Issue: 01;
Start page: 50;
Date: 2012;
Original page

Keywords: X-Ray Methods | Co-Existence of Phase | Piezoelectric Properties | Dielectric Properties

ABSTRACT
The structural and electrical properties of Pb0.98Sm0.02[(Zry,Ti1–y)0.98( Fe1/23+,Nb1/25+)0.02]O3 ceramics system with the composition near the morphotropic phase boundary were investigated as a function of the Zr/Ti ratio by X-ray diffraction (XRD). Studies were performed on the samples prepared by solid state reaction for y = 0.47, 0.49, 051, 0.53, 0.55 and 0.57. Combined with piezoelectric properties results, it was consistently shown that an MPB exists between y = 0.51 and y = 0.55 in this system. When y < 0.51, the tetragonal phase dominates at ambient temperatures. In the range of y > 0.55, the rhombohedral phase dominates. Lattice parameters of the tetragonal phase and rhombohedral phase were found to vary with chemical composition. The average particle size ranged from 17.18 to 26.05 nm. The dielectric (ε = 1076), tan δ = 0.013 and piezoelectric properties (d31 = 122 pC/N, kp = 0.631 and Qm = 462) obtained were maximum at y = 0.55 which could be suitable for possible electromechanical and energy harvesting applications.
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Tango Rapperswil
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