Solid solution effects in coupled orderdisorder ferroelectrics

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1 Scopus citations

Abstract

The simple orderdisorder Ising model for one sublattice is extended to include multiple separate orderdisorder processes and their mutual interaction and coupling. The multiple sublattice model shows that the Curie temperature (Yc) is a weighted average of what would be determined by any of the disorder processes alone. The weighting involves the dipole moments of the individual disordering processes. This additive behavior is explored in detail for two orderdisorder ferroelectrics where plentiful solid solution data are available: lithium niobate (LiNbO3) and lithium tantalate (LiTaO3).

Original languageEnglish (US)
Pages (from-to)221-234
Number of pages14
JournalFerroelectrics
Volume145
Issue number1
DOIs
StatePublished - Aug 1993
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Keywords

  • Ising model
  • lithium niobate (LiNbO,)
  • lithium tantalate (LiTaO,)
  • orderdisorder ferroelectrics
  • spontaneous polarization

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