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Journal of Materials Science

, Volume 39, Issue 16–17, pp 5291–5294 | Cite as

Dielectric and piezoelectric properties of the mechanochemically prepared PZT ceramics

  • Z. Branković
  • G. Branković
  • F. Moura Filho
  • J. A. Varela
Article

Abstract

Mechanochemical synthesis was applied to obtain nanocrystalline powders of composition Pb(Zr0.52Ti0.48)O3 (PZT). Milling was performed in a planetary ball mill using vials and balls made of zirconia or steel in order to investigate influence of milling media on the electrical properties of resulting ceramics. PZT ceramics showed high values for dielectric constant (∈r), reaching 970 at room temperature, as well as low dielectric loss (tanδ) under the optimal processing conditions. High values of remanent polarization (Pr) indicate high internal polarizability. The best samples showed piezoelectric strain constant d33 = 347 pC/N and planar coupling factorkP = 0.44. Milling in ZrO2 medium prevents powder contamination and provides reproducibility of milling process. Also, PZT obtained from the powders milled in ZrO2 exhibited lower values of dielectric loss, in comparison with the PTZ obtained from the powders milled in Fe. This suggests that contamination of the powder with Fe could result in an increase of conductivity in final product.

Keywords

Zirconia Milling Dielectric Constant Dielectric Loss Ball Mill 
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

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Z. Branković
    • 1
  • G. Branković
    • 2
  • F. Moura Filho
    • 3
  • J. A. Varela
  1. 1.Faculty of Technology and MetallurgyBelgradeSerbia.
  2. 2.Center for Multidisciplinary Studies of University of BelgradeBelgradeSerbia
  3. 3.Instituto de Química, UNESPAraraquaraBrasil

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