Article 2005

Effect of urea on lead zirconatetitanate - Pb(Zr0.52Ti0.48)O3 - Nanopowders synthesized by the Pechini method

Authors

Abreu, A.

Zanetti, S. M.

Oliveira, M. A.S.

Thim, G. P.

Journal of the European Ceramic Society , vol. 25 , no. 5 , pp. 743-748

ISSN: 09552219

DOI: 10.1016/j.jeurceramsoc.2004.02.021

Citations

Authors

Abstract

PZT powders were synthesized by a chemical method using the conventional Pechini method and a urea-modified Pechini method, where the smooth pH increase, by the decomposition of urea, allows a better control of the pH. The FTIR spectra revealed that the precursor gel in conventional Pechini method is formed by a mixture of unidentade- and bridged-bonded complexes between the metallic cations and the citric acid. On the other hand, the precursor gel in the modified Pechini method is formed essentially by unidentade complexes. The modified Pechini method leads to homogeneous sub-micrometric spherical particles of 0.1 μm and a 7.4 m2g-1surface area. © 2004 Elsevier Ltd. All rights reserved.

Keywords

Microstructure pre-firing Pb(Zr,Ti)O3 Powders-chemical preparation Sol-gel processes

Ceramics and Composites (MATE) Materials Chemistry (MATE)

Gilmar Patrocínio Thim

: Scopus

Last Update: 2026-06-25

: 2-s2.0-12444332073

PII: S0955221904001281