Nano-sized Ag-BaTiO3 composite powders with various amount of Ag prepared by spray pyrolysis

You Na Ko, Seung Ho Choi, Yun Chan Kang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The preparation of precursors of BaTiO3 nanopowders with various amounts of Ag by spray pyrolysis is reported. The precursor powders obtained with hollow and thin-wall particles are composed of uniformly dispersed Ba, Ti, and Ag components. After post-treatment and a simple milling process, the precursor powders, irrespective of the amount of Ag, are transformed into Ag-BaTiO3 composite nanoparticles. The mean particle size of the Ag (10mol%)-BaTiO3 powders is 142nm. BaTiO3 pellets containing Ag exhibit dense structures even at a low sintering temperature of 1000°C. BaTiO3 pellets with 10mol% Ag show the highest dielectric constant of 2950, as opposed to the pure BaTiO3 pellets (without Ag), whose dielectric constant is 1827.

Original languageEnglish
Pages (from-to)1335-1341
Number of pages7
JournalJournal of the European Ceramic Society
Volume33
Issue number7
DOIs
Publication statusPublished - 2013 Jul
Externally publishedYes

Keywords

  • Barium titanate
  • Composite
  • Dielectric material
  • Nanopowder
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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