Synthesis of highly tetragonal BaTiO3 nanopowders using acetone as a solvent by alkoxide-hydroxide route

Mi Ri Joung, In Tae Seo, Jin Seong Kim, Jae Hong Choi, Sahn Nahm, Chang Hak Choi, Tae Hyun Sung

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

BaTiO3 (BT) nanopowders were synthesized in acetone to remove the TiO2 second phase, which was formed in the specimens synthesized in the 2-methoxyethanol solvent at above 100 °C due to H2O evaporation. No TiO2 second phase was formed in the specimens synthesized in acetone, even at 260 °C, due to the low boiling temperature of acetone which evaporated at above 55 °C and suppressed the H2O evaporation by increasing the vapor pressure in the vessel. However, for the BT nanopowders synthesized at 250 °C for 60 h, TiO2 second phase was formed at a Ba/Ti ratio of ≤1:5 and the BT nanopowders were agglomerated at a ratio of ≥3:0. Homogeneous BT nanopowders were obtained at a ratio of 2.0 and they exhibited a high c=a ratio of 1.0082 with a small size of 95.2 nm. Therefore, these nanopowders can be a good candidate for future multilayer ceramic capacitor.

Original languageEnglish
Article number035002
JournalJapanese Journal of Applied Physics
Volume50
Issue number3
DOIs
Publication statusPublished - 2011 Mar 1

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alkoxides
Acetone
acetone
hydroxides
routes
Evaporation
synthesis
evaporation
Ceramic capacitors
Vapor pressure
boiling
Boiling liquids
vapor pressure
vessels
capacitors
Multilayers
ceramics
Temperature
temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Synthesis of highly tetragonal BaTiO3 nanopowders using acetone as a solvent by alkoxide-hydroxide route. / Joung, Mi Ri; Seo, In Tae; Kim, Jin Seong; Choi, Jae Hong; Nahm, Sahn; Choi, Chang Hak; Sung, Tae Hyun.

In: Japanese Journal of Applied Physics, Vol. 50, No. 3, 035002, 01.03.2011.

Research output: Contribution to journalArticle

Joung, Mi Ri ; Seo, In Tae ; Kim, Jin Seong ; Choi, Jae Hong ; Nahm, Sahn ; Choi, Chang Hak ; Sung, Tae Hyun. / Synthesis of highly tetragonal BaTiO3 nanopowders using acetone as a solvent by alkoxide-hydroxide route. In: Japanese Journal of Applied Physics. 2011 ; Vol. 50, No. 3.
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AU - Choi, Chang Hak

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