21. Enhanced Density and Piezoelectric Anisotropy in High TC PbNb2O6 Based Ferroelectric Ceramics

  1. Sheng Yao,
  2. Bruce Tuttle,
  3. Clive Randall and
  4. Dwight Viehland
  1. Ducinei Garcia1,
  2. Michel Venet1,
  3. Aline Vendramini1,
  4. José Antonio Eiras1 and
  5. Fidel Guerrero2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291252.ch21

Advances in Electronic Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 26, Number 5

Advances in Electronic Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 26, Number 5

How to Cite

Garcia, D., Venet, M., Vendramini, A., Eiras, J. A. and Guerrero, F. (2005) Enhanced Density and Piezoelectric Anisotropy in High TC PbNb2O6 Based Ferroelectric Ceramics, in Advances in Electronic Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 26, Number 5 (eds S. Yao, B. Tuttle, C. Randall and D. Viehland), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291252.ch21

Author Information

  1. 1

    Federal University of São Carlos Rod. Washington Luis, km 235 São Carlos, SP, 13565-905

  2. 2

    University of Oriente Patricio Lumumba. C. P. 90500. Santiago de Cuba. Cuba

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982350

Online ISBN: 9780470291252

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Keywords:

  • synthesis;
  • compensation;
  • anisotropy;
  • analyzed;
  • piezoelectric materials

Summary

In this work, conventional synthesis was employed to obtain highly dense Ti or Ba-doped PbNb2O6 ceramics. The ferroelectric phase (at room temperature) was obtained through a heating treatment at 1300°C during lh, after calcination process. The compensation of the lead oxide loss was made by the ideal addition of PbO excess prior calcination and sintering steps. The sintering parameters as time and temperature were studied to optimize the firing conditions. Ceramics of orthorhombic structure and high density were obtained. The temperature dependence of the dielectric properties and the piezoelectric coefficients for the ceramics were analyzed. High Curie temperatures and high piezoelectric anisotropy were found, especially for the lower content Ti doped PN ceramics.