Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics

Z.P. Gao, H.X. Yan, H.P. Ning, R. Wilson, X.Y. Wei, B. Shi, H. Ye, M.J. Reece

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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.

Original languageEnglish
Pages (from-to)1001-1008
Number of pages8
JournalJournal of the European Ceramic Society
Issue number5
Early online date13 Dec 2012
Publication statusPublished - May 2013


  • curie point
  • ferroelectric
  • PLS ceramic
  • SPS


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