Effect of Rare-Earth Additives on Electromechanical Properties of Modified Lead Titanate Ceramics |
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| Authors: | Thitima Suwannasiri Ahmad Safari |
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| Affiliation: | Department of Ceramic Science and Engineering, Rutgers—The State University of New Jersey, Piscataway, New Jersey 08854 |
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| Abstract: | The influence of rare-earth additives, such as La, Nd, Sm, and Gd, and poling conditions on the electromechanical properties of (Pb1−3 x /2Ln x )(Ti0.98Mn0.02)O3 compositions, x = 0.04–0.12, were investigated. The type and amount of additive were found to affect the lattice anisotropy, dielectric constant, and electromechanical properties. A large electromechanical anisotropy ( k t / k p ) could be obtained in 10 mol% Sm-modified and 8 mol% Gd-modified lead titanate ceramics, and seemed to correlate to a low Poisson's ratio. |
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