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Author Rossetti, G. A. (Jr.) ♦ Navrotsky, A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ CRYSTAL-PHASE TRANSFORMATIONS ♦ LEAD OXIDES ♦ ZIRCONIUM OXIDES ♦ TITANIUM OXIDES ♦ FERROELECTRIC MATERIALS ♦ CALORIMETRY ♦ SPECIFIC HEAT ♦ X-RAY DIFFRACTION ♦ EXPERIMENTAL DATA
Abstract The order of the cubic {leftrightarrow} tetragonal phase change in ferroelectric Pb(Zr{sub x}Ti{sub 1{minus}x})O{sub 3} (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 {le} x {le} 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.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-04-01
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 144
Issue Number 1


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