Piezoelectric and mechanical properties of ceria-doped lead zirconate titanate ceramics

Phases, microstructures and properties of lead--zirconate--titanate (PZT) ceramics with the compositions Pb(Zr sub 0.535-- delta Ce sub delta Ti sub 0.465 ) O sub 3 where delta = 0.0, 0.001, 0.01, 0.02 and 0.05 were studied. Rhombohedral and tetragonal phases were present at delta = 0.0. The amount...

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Bibliographic Details
Published in:Journal of materials science 1992-08, Vol.27 (15), p.4125-4130
Main Authors: NAG, S. K, AGRAWAL, D. C
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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Summary:Phases, microstructures and properties of lead--zirconate--titanate (PZT) ceramics with the compositions Pb(Zr sub 0.535-- delta Ce sub delta Ti sub 0.465 ) O sub 3 where delta = 0.0, 0.001, 0.01, 0.02 and 0.05 were studied. Rhombohedral and tetragonal phases were present at delta = 0.0. The amount of the rhombohedral phase increased with increasing delta , and only the tetragonal phase was present for delta > 0.001. The c/a ratio of the tetragonal phase also increases with increasing delta . Particles of CeO sub 2 were found to be present in compositions with delta > 0.01, indicating that the solubility of CeO sub 2 is < 1 at.% on the metals basis. The piezoelectric and electromechanical constants achieved maximum values for delta = 0.001. The hardness increased monotonically with increasing delta . The modulus of rupture and the fracture toughness, however, went through a minimum and both stayed lower than their values for delta = 0.
ISSN:0022-2461
1573-4803
DOI:10.1007/BF01105115