Fine-sized Bi0.5Na0.5TiO3 powders prepared by spray pyrolysis from polymeric precursors

Dae Soo Jung, Hye Young Koo, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Bi0.5Na0.5TiO3 (BNT) powders with nanometre and micrometre sizes were prepared by an ultrasonic spray pyrolysis process. The BNT powders obtained from the spray solution without citric acid had a spherical shape and micrometre size. On the other hand, the BNT powders obtained from a spray solution with 0.4M citric acid of had nanometre size at a calcinations temperature of 700 °C. Single phase BNT powders with a rhombohedral structure were obtained at a calcination temperature of 700 ° C. The sintering of pellets obtained from the micrometre sized BNT powders started at a temperature of 900 ° C. On the other hand, sintering and grain growth of the pellet obtained from the nanometre sized BNT powders occurred even at the low temperature of 850 °C. The relative densities of the pellets obtained from the nanometre sized BNT powders were 95 and 96% of the theoretical density of BNT at sintering temperatures of 950 and 1000 °C. The mean grain sizes of the pellets sintered at temperatures of 950 and 1000 °C were the same at 1.10 μm.

Original languageEnglish
Pages (from-to)425-431
Number of pages7
JournalJournal of Ceramic Processing Research
Issue number4
Publication statusPublished - 2010
Externally publishedYes


  • Nano powder
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites


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