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Journal of Materials Science

, Volume 30, Issue 22, pp 5819–5824 | Cite as

Influence of temperature on the low- and high-frequency relaxation in a TTB-type ferroelectric relaxor Pb2K(Nb0.1Ta0.9)5O15

  • Z. Lu
  • J. -P. Bonnet
  • J. Ravez
  • P. Hagenmuller
Papers

Abstract

Dielectric measurements on Pb2K(Nb0.1Ta0.9)5O15 ceramics have been reported at 140<T<530 K in the 20–109 Hz frequency range. The tetragonal tungsten bronze-type (TTB) material shows a typical ferroelectric relaxor behaviour. Three dielectric dispersions are observed. The relaxor behaviour results from a thermally activated relaxation with a large time distribution. This relaxation could be interpreted in terms of a polar microdomain concept. The two other dielectric dispersions result from a space charge effect and from a relaxation probably related to the TTB structure.

Keywords

Polymer Tungsten Material Processing Space Charge Time Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Z. Lu
    • 1
  • J. -P. Bonnet
    • 1
  • J. Ravez
    • 1
  • P. Hagenmuller
    • 1
  1. 1.Laboratoire de Chimie du Solide du CNRSUniversité de Bordeaux ITalence CedexFrance

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