Effects of dopants on grain growth of nano-sized BaTiO3 powders prepared by citric acid-assisted spray pyrolysis

Dae Soo Jung, Sang Ho Lee, Yun Chan Kang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Nano-sized BaTiO3 powders doped with Y, Eu and La components were prepared by ultrasonic spray pyrolysis from a spray solution with citric acid. The precursor BaTiO3 powders had a large size, fractured and hollow structures irrespective of the type of dopant. The calcined BaTiO 3 powders with and without dopants had nanometre sizes after a simple milling by hand using an agate mortar. The mean size of La-doped BaTiO 3 powders measured from the transmission electron microscope (TEM) images was 38 nm at a calcination temperature of 700 °C. The mean crystallite sizes of the doped and undoped BaTiO3 powders changed from 20 to 33 nm according to the type of dopant at a calcination temperature of 700 °C. An effective grain growth inhibition took place with the doped BaTiO3 ceramics. The average grain sizes of La and Eu-doped BaTiO3 ceramics were each 380 and 400 nm at a sintering temperature of 1280 °C.

Original languageEnglish
Pages (from-to)307-310
Number of pages4
JournalJournal of Ceramic Processing Research
Volume9
Issue number3
Publication statusPublished - 2008
Externally publishedYes

Keywords

  • Barium titanate
  • Nano particle
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites

Fingerprint Dive into the research topics of 'Effects of dopants on grain growth of nano-sized BaTiO<sub>3</sub> powders prepared by citric acid-assisted spray pyrolysis'. Together they form a unique fingerprint.

  • Cite this