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Journal of Electroceramics

, Volume 13, Issue 1–3, pp 515–518 | Cite as

Dielectric and Piezoelectric Properties of Nonstoichiometric SrBi2Ta2O9 and SrBi2Nb2O9 Ceramics

  • J. A. Cho
  • S. E. Park
  • T. K. Song
  • M. H. Kim
  • H. S. Lee
  • S. S. Kim
Article

Abstract

Nonstoichiometric SrBi2Ta2O9 (SBT) and SrBi2Nb2O9 (SBN) ceramics were prepared by a solid state reaction method. X-ray diffraction analysis showed that single-phase of Bi-layered perovskite was obtained. With different Sr/Bi content ratios of SBT and SBN, Curie temperature (T C ), electromechanical factor (K p ) and mechanical quality factor (Q m ) were measured. T C of SBN (SBT) rose from 414C (314C) to 494C (426C) when Sr/Bi content ratio was increased from 0.55/2.3 to 1.2/1.8. In the most Sr-deficient/Bi-excess ratio of 0.55/2.3, the maximum values of Q m were obtained approximately 1013 and 3325 for SBT and SBN, respectively.

Keywords

Bi-layered perovskite Curie temperature electromechanical factor mechanical quality factor 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • J. A. Cho
    • 1
  • S. E. Park
    • 1
  • T. K. Song
    • 1
  • M. H. Kim
    • 1
  • H. S. Lee
    • 2
  • S. S. Kim
    • 2
  1. 1.Department of Ceramic Science and EngineeringChangwon National UniversityChangwonKorea
  2. 2.Department of PhysicsChangwon National UniversityChangwonKorea

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