Composites of 0.3Pb(Mg1/3Nb2/3)O3-0.7Pb(Zr 0.52Ti0.48)O3 prepared by a sol-gel method

Dong Soo Paik, Sridhar Komarneni, Isaac Robin Abothu, A. V. Prasada Rao

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4 Scopus citations

Abstract

Lead magnesium niobate (PMN)-lead zirconium titanate (PZT) electroceramic composites have been fabricated from PMN powder+PZT powder (P-P processing) and PMN powder+PZT solution (P-S processing) using a sol-gel process. The particle sizes of PMN-PZT powder prepared by P-S processing were more than three times greater (> 1 μm) in comparison with that of P-P processed powder which was 0.3 μm. The grain size, density, and relative permittivity of PMN-PZT ceramics prepared by P-S processing were larger than those of P-P processed samples. The specimen sintered at 1230°C by P-P processing exhibited similar properties to the specimen sintered at 1170°C by P-S processing. Ceramics prepared from a PMN core enclosed in a PZT shell using a polymerized solution mixed at molecular level (powder+solution processing) showed better structural and dielectric properties compared to samples processed with mixed sol-gel powders.

Original languageEnglish (US)
Pages (from-to)1831-1835
Number of pages5
JournalJournal of Materials Chemistry
Volume7
Issue number9
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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