Characteristics of samaria-doped ceria nanoparticles prepared by spray pyrolysis

Hee Chan Jang, Dae Soo Jung, Jung Hyun Kim, Yun Chan Kang, Yoon Ho Cho, Jong Heun Lee

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Samaria-doped ceria (SDC) nanoparticles were prepared by spray pyrolysis. The means sizes of the samaria-doped ceria nanoparticles were controlled from 21 to 150 nm by changing the calcination temperatures between 700 and 1200 °C. The pellets formed from the SDC particles calcined at temperatures between 700 and 1000 °C had similar grain sizes between 0.75 and 0.82 μm. However, pellet formed from the SDC particles calcined at a temperature of 1200 °C had large grain size of 1.22 μm. The pellet formed from the SDC particles calcined at a temperature of 1000 °C had slightly smaller resistance of grain-boundary than those of the pellets formed from the SDC particles calcined at temperatures between 700 and 900 °C. However, the pellet formed from the SDC particles calcined at a temperature of 1200 °C had low resistance of grain-boundary. The pellet formed from the SDC particles calcined at a temperature of 1200 °C had conductivity of 44.65 × 10-3 S cm-1 at a measuring temperature of 700 °C that more twice than those of the pellets formed from the SDC calcined below 1000 °C.

Original languageEnglish
Pages (from-to)465-471
Number of pages7
JournalCeramics International
Volume36
Issue number2
DOIs
Publication statusPublished - 2010 Mar

Keywords

  • A. Powders: chemical preparation
  • A. Powders: gas phase reaction

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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