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

George A. Rossetti; Alexandra Navrotsky

doi:10.1006/jssc.1999.8146

Calorimetric Investigation of Tricritical Behavior in Tetragonal Pb(Zr_xTi_1-x)O₃

George A. Rossetti, Alexandra Navrotsky

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

Abstract

The order of the cubic ↔ tetragonal phase change in ferroelectric Pb(Zr_xTi_1-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 language	English (US)
Pages (from-to)	188-194
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	144
Issue number	1
DOIs	https://doi.org/10.1006/jssc.1999.8146
State	Published - Apr 1999
Externally published	Yes

Keywords

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

Access to Document

10.1006/jssc.1999.8146

Cite this

@article{93e2ed2037a24aeaa3ce304a8c78aa57,

title = "Calorimetric Investigation of Tricritical Behavior in Tetragonal Pb(ZrxTi1-x)O3",

abstract = "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.",

keywords = "PZT, ferroelectrics, perovskites, phase transitions, specific heat",

author = "Rossetti, {George A.} and Alexandra Navrotsky",

note = "Funding Information: This work was initiated at Princeton University and was supported by the NSF Solid State Chemistry Program (Grants DMR 92-15802 and 97-03922) and used facilities of CHiPR, the Center for High Pressure Research, an NSF Science and Technology Center. Completion of this work was supported at the Center for Advanced Microgravity Materials Processing, a NASA sponsored Commercial Space Center. The authors are also indebted to Dr. J. P. Cline (National Institute of Standards and Technology) and Dr. E. Vicenzi (Princeton University) for their assistance with the X-ray diffraction and electron microprobe measurements.",

year = "1999",

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doi = "10.1006/jssc.1999.8146",

language = "English (US)",

volume = "144",

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journal = "Journal of Solid State Chemistry",

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T1 - Calorimetric Investigation of Tricritical Behavior in Tetragonal Pb(ZrxTi1-x)O3

AU - Rossetti, George A.

AU - Navrotsky, Alexandra

N1 - Funding Information: This work was initiated at Princeton University and was supported by the NSF Solid State Chemistry Program (Grants DMR 92-15802 and 97-03922) and used facilities of CHiPR, the Center for High Pressure Research, an NSF Science and Technology Center. Completion of this work was supported at the Center for Advanced Microgravity Materials Processing, a NASA sponsored Commercial Space Center. The authors are also indebted to Dr. J. P. Cline (National Institute of Standards and Technology) and Dr. E. Vicenzi (Princeton University) for their assistance with the X-ray diffraction and electron microprobe measurements.

PY - 1999/4

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N2 - 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.

AB - 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.

KW - PZT

KW - ferroelectrics

KW - perovskites

KW - phase transitions

KW - specific heat

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