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Elsevier, Journal of the European Ceramic Society, 5(33), p. 1001-1008

DOI: 10.1016/j.jeurceramsoc.2012.11.015

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Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics

Journal article published in 2013 by Z. P. Gao, H. X. Yan, H. P. Ning, R. Wilson, X. Y. Wei ORCID, B. Shi, H. Ye, M. J. Reece
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The ferroelectric and dielectric properties of cerium (Ce) substituted La2Ti2O7 (LTO) have been investigated. Single phase, dense La2-xCexTi2O7 (x=0.15, 0.25, 0.35) ceramics were prepared by spark plasma sintering. The solubility limit of Ce in La2-xCexTi2O7 was found to be between 0.35 and 0.5. The a-, b- and c-axes of the unit cell decrease with increasing Ce substitution. The Curie point (Tc) of La2-xCexTi2O7 (x=0, 0.15, 0.25, 0.35) decreases and dielectric constant and loss increase with increasing Ce substitution. Cerium can increase the d33 of La2Ti2O7. The highest d33 was 3.9±0.1pC/N for La1.85Ce0.15Ti2O7 textured ceramic. © 2012 Elsevier Ltd.