Effects of la content on the properties of Ba1-xLa xTiO3 powders prepared by spray pyrolysis

D. S. Jung, H. Y. Koo, H. C. Jang, Yun Chan Kang

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12 Citations (Scopus)

Abstract

Nano-sized Bai1-xLaxTiO3 (0 < x < 0.03) powders were prepared by ultrasonic spray pyrolysis from the spray solution with citric acid. The mean sizes of the primary particles decreased from 110 nm to 59 nm when the x of the Ba1-xLaxTiO 3 powders was changed from 0 to 0.03. The BET surface areas of the powders changed from 9.1 m2/g to 16.9 m2/g. The pure BaTiO3 and La-doped BaTiO3 powders had both tetragonal and cubic crystal structures. The average grain size of the sintered BaTiO 3 specimen was 2.8 uμrn, while those of the La-doped BaTiO 3 pellets ranged from 1.04 uμm to 0.68 uμm according to the doping concentrations of La. The dielectric constant of Ba1-xLa xTiO3(0.01 <x< 0.03) pellets ranged from 2500 to 3855 when sintered at 1280°

Original languageEnglish
Pages (from-to)809-814
Number of pages6
JournalMetals and Materials International
Volume15
Issue number5
DOIs
Publication statusPublished - 2009 Oct 1
Externally publishedYes

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Keywords

  • Barium titanate
  • Nano powder
  • Spray pyrolysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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