Dielectric properties of nano-sized Ba 0.7Sr 0.3TiO 3 powders prepared by spray pyrolysis

Seung Ho Choi, You Na Ko, Jung Kul Lee, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Nano-sized Ba 0.7Sr 0.3TiO 3 powders are prepared by post-treatment of the precursor powders with hollow and thin wall structure at temperatures between 900 and 1100°C. Ethylenediaminetetraacetic acid and citric acid improve the hollowness of the precursor powders prepared by spray pyrolysis. The mean sizes of the powders post-treated at temperatures of 900, 1000 and 1100°C are 42, 51 and 66 nm, respectively. The densities of the Ba 0.7Sr 0.3TiO 3 pellets obtained from the powders post-treated at 900, 1000 and 1100°C are each 5.36, 5.55 and 5.38 g cm -3 at a sintering temperature of 1300°C. The pellet obtained from the powders post-treated at 1000°C has higher maximum dielectric constant than those obtained from the powders post-treated at 900 and 1100°C.

Original languageEnglish
Pages (from-to)4029-4033
Number of pages5
JournalCeramics International
Issue number5
Publication statusPublished - 2012 Jul
Externally publishedYes


  • Barium strontium titanate
  • C. Dielectric properties
  • Nano powders
  • Spray pyrolysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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