A TEM study of ordering in the perovskite, Pb(Sc1/2Ta1/2)O3

C. A. Randall, D. J. Barber, R. W. Whatmore, P. Groves

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Ordering behaviour and the factors which influence the ordering have been studied in both single crystals and hot-pressed ceramics of Pb(Sc1/2Ta1/2)O3 using TEM techniques, including low-temperature microscopy. The characteristics of the structurally-ordered domains are described and also the observation by electron diffraction of new superlattice reflections and diffuse scattering in both the paraelectric and ferroelectric phases. The superlattice reflections are interpreted in terms of Pb2+ cation displacements. The non-interaction of ordered domains and ferroelectric domains is explained within this model.

Original languageEnglish (US)
Pages (from-to)4456-4462
Number of pages7
JournalJournal of Materials Science
Issue number12
StatePublished - Dec 1986

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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