High-temperature perovskite relaxor ferroelectrics: A comparative study

C. J. Stringer, Thomas R. Shrout, Clive A. Randall

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

The recent discovery of high-temperature piezoelectric ceramics based on Bi (Me′ Me″) O3 -PbTiO3 solutions have also permitted the development of high-temperature relaxor ferroelectrics with ternary solid solutions. One of the high-temperature compositions based on the x BiScO3 - yPb (Mg 13 Nb 23) O3 -z PbTiO3 (xBS-yPMT-zPT) ternary system exhibited a high permittivity maxima of ∼17 000 and a Tmax of 500-550 K. These materials are compared to complex lead perovskite relaxor ferroelectrics by determination of the activation energy, EA, and freezing temperature, Tf, from the Vögel-Fulcher relationship and also a high-temperature deviation temperature, TD, from the Curie-Weiss behavior. It was found that these parameters scale within the perovskite relaxor systems and from the self-consistent trends of these defining parameters. It is suggested that a general comparison for relaxor ferroelectrics may exist. The highest EA, Tf, and TD values all exist within the xBS-yPMT-zPT ternary system within the relaxor ferroelectric systems compared in this study. Furthermore, given the compositional trends within these comparisons, insights into the nature of the dynamic polarization behavior in the perovskite relaxor ferroelectrics may be gained.

Original languageEnglish (US)
Article number054107
JournalJournal of Applied Physics
Volume101
Issue number5
DOIs
StatePublished - Mar 26 2007

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ternary systems
trends
piezoelectric ceramics
freezing
solid solutions
permittivity
activation energy
deviation
temperature
polarization

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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High-temperature perovskite relaxor ferroelectrics : A comparative study. / Stringer, C. J.; Shrout, Thomas R.; Randall, Clive A.

In: Journal of Applied Physics, Vol. 101, No. 5, 054107, 26.03.2007.

Research output: Contribution to journalArticle

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