Ferroelectric and dielectric properties of Nd2−xCexTi2O7 ceramics

Z.P. Gao, B. Shi, H. Ye, H.X. Yan, M.J. Reece

Research output: Contribution to journalArticle

Abstract

The solid solution system Nd2−xCexTi2O7 has been investigated. The solubility limit of Ce in Nd2−xCexTi2O7 was found to be 0·5–0·75 according to X-ray diffraction and X-ray photoelectron spectroscopy results. Ce substitution increases the b and c axes and the volume of the unit cell due to its larger ionic radius. Nd2−xCexTi2O7 (x  = 0·05, 0·25, 0·5, 0·75) textured ceramics were fabricated using spark plasma sintering. The ferroelectric and dielectric properties of the ceramics were studied. Ce substitution decreases the Curie point Tc of Nd2−xCexTi2O7 compounds. The results suggest that the Tc of Ce2Ti2O7 is <1445°C.

Original languageEnglish
Pages (from-to)191-197
Number of pages7
JournalAdvances in Applied Ceramics
Volume114
Issue number4
Early online date8 Dec 2014
DOIs
Publication statusPublished - 2015

Keywords

  • perovskite layered structure
  • ferroelectric
  • high curie point
  • texture

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