Effect of A-site substitution of calcium on Zr-rich lead zirconate titanate

Haitao Huang, Zhang Tianshu, Joo Tien Oh, Peter Hing

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

Effect of calcium substitution on the A-site of Zr-rich lead zirconate titanate Pb(Zr 0.94 Ti 0.06 )O 3 and Pb(Zr 0.92 Ti 0.08 )O 3 is studied. It is found that the rhombohedral structure of Zr-rich lead zirconate titanate changes to tetragonal and finally to cubic with increasing amount of calcium substitution. Both the dielectric constant and the Curie temperature decrease with the substitution of calcium on the A-site of the ABO 3 perovskite structure. A pyroelectric current peak is observed which is resulted from the phase transition from the low temperature rhombohedral ferroelectric phase F R ( LT ) to the high temperature F R ( HT ) one. Small amount of calcium substitution increases the peak value and also shifts the peak position to higher temperatures. However, further increase in the calcium content lowers the peak value and finally smears out the peak.
Original languageEnglish
Pages (from-to)55-65
Number of pages11
JournalFerroelectrics
Volume274
DOIs
Publication statusPublished - 1 Jan 2002
Externally publishedYes

Keywords

  • Dielectrics
  • Ferroelectrics
  • Pyroelectrics
  • PZT

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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