The structural origin of the antiferroelectric properties and relaxor behavior of Na0.5Bi0.5TiO3

  • V. Dorcet
  • G. Trolliard
  • P. Boullay
Conference paper

Abstract

Na0.5Bi0.5TiO3 (NBT) has been thoroughly investigated during the past forty years, mainly for its interesting ferroelectric and dielectric properties. At ambient temperature, this ferroelectric perovskite compound is rhombohedral with the polar R3c space group. It is known to transform to a tetragonal phase over a large domain of temperature of about 150°C during which the two phases coexist, which makes NBT an unusual compound exhibiting very specific behavior. In addition, if we compare the temperatures of phase transition deduced on one hand from the structural studies and on the others from the numerous experimental physical properties obtained over the last forty years, no clear correspondence exists.

Keywords

TEM NBT phase transitions ferroelectrics 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • V. Dorcet
    • 2
  • G. Trolliard
    • 1
  • P. Boullay
    • 2
  1. 1.Laboratoire Sciences des Procédés Céramiques et des Traitements de Surface, SPCTS - CNRS-UMR-6638Limoges CedexFrance
  2. 2.Laboratoire de Cristallographie et Sciences des Matériaux, CRISMAT - CNRS UMR 6508Caen CedexFrance

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