Calorimetric Investigation of Tricritical Behavior in Tetragonal Pb(ZrxTi1-x)O3

George A. Rossetti, Alexandra Navrotsky

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


The order of the cubic ↔ tetragonal phase change in ferroelectric Pb(ZrxTi1-x)O3(PZT) was investigated by measurements of the specific heat. The specimens studied were highly crystalline powder samples carefully prepared by chemical synthesis methods to ensure chemical homogeneity. The existence of a tricritical point in the compositional range 0.30≤x≤0.40 was established. The results demonstrated a close correspondence between the effects of hydrostatic pressure and the effects of zirconium substitution on the order of the transition. A relationship between the first-order character of the transition and the ionic packing density in the cubic structure was proposed.

Original languageEnglish (US)
Pages (from-to)188-194
Number of pages7
JournalJournal of Solid State Chemistry
Issue number1
StatePublished - Apr 1999
Externally publishedYes


  • PZT
  • ferroelectrics
  • perovskites
  • phase transitions
  • specific heat

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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