Phase stability and pyroelectricity of antiferroelectric PLZST oxide

Wai Hung Chan, Zhengkui Xu*, Jiwei Zhai, Eugene V. Colla, H. D. Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Polarization and transmission electron microscopy studies of the Pb 0.97La0.02(Zr0.65Sn0.22Ti 0.13)O3 (PLZST) ceramics confirmed the antiferroelectric (AFE) nature of this material. The electric-field-induced ferroelectric (FE) phase has a lifetime much longer than the reasonable laboratory time scale at T∈≤∈60°C. The observed frequency dispersion of the dielectric constant reflects the competition between AFE and FE orderings. At high temperatures, the induced-FE phase reverses fast to the AFE phase. This process produces a pronounced pyroelectric current. The FE-to-AFE transition temperature can also be tuned by a dc bias field.

Original languageEnglish
Pages (from-to)145-148
Number of pages4
JournalJournal of Electroceramics
Volume21
Issue number1-4 SPEC. ISS.
DOIs
StatePublished - 1 Dec 2008

Keywords

  • Antiferroelectric
  • Frequency dispersion
  • PLZST ceramics
  • Pyroelectric properties
  • Tunability

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