Properties of bismuth-strontium titanate ceramics doped with MnO2 and Nd2O3.

Authors

  • Maria Virginia Gelfuso Universidade de Fortaleza
  • José Antônio Eiras
  • Daniel Thomazini

Keywords:

Propriedades dielétricas. Ferroelétrico. Perovskitas. BLSF.

Abstract

Strontium bismuth titanate samples (SBT) doped with 4-mol % of MnO2 (SBT + Mn) or Nd2O3 (SBT + Nd) were produced by conventional oxide mixture method. The structural, dielectric and piezoelectric properties were compared between the pure and doped ceramics. The aspect ratio of the grains (Width/Thickness – W/T) was modified with the addition of the dopants, being more evident in the SBT + Mn ceramic than in the others. The neodymium addition increased the electromechanical coupling factor of the ceramics while the manganese doping favored the reduction of this parameter. The values of coercive field, saturation and remanent polarization for the SBT + Mn ceramic were higher than that obtained to SBT and SBT + Nd ceramics.

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How to Cite

Gelfuso, M. V., Eiras, J. A., & Thomazini, D. (2009). Properties of bismuth-strontium titanate ceramics doped with MnO2 and Nd2O3. Revista Tecnologia, 28(2). Retrieved from https://ojs.unifor.br/tec/article/view/51

Issue

Vol. 28 No. 2 (2007)

Section

Artigos

License

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