Surface instability in high surface area complex oxides: BaTiO3 study

Nobuo Sakurai, Vincent Bojan, Joshua James Stapleton, Gai Ying Yang, Clive A. Randall, Youichi Mizuno, Hirokazu Chazono

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

High quality BaTiO3 powders that were synthesized with hydrothermal and solid state methods are characterized with respect to surface chemistry. Different characterization techniques are used to obtain a physical picture for the BaTiO3 powders with respect to different synthesis routes and thermal histories. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) are used to understand the BaTiO3 powders after heat and humidity treatments. Formation of amorphous and crystalline BaCO3 in local heterogeneous regions depletes the surrounding surface of Ba ions to create larger areas that are Ti-rich. BaCO3 formation and adventitious carbon adsorption occur extremely quickly on the surface of crushed single-crystal BaTiO3 powder, but for manufactured powders, the degree of carbonate formation and the impact on surface stoichiometry varies with thermal history.

Original languageEnglish (US)
Article number061404
JournalJapanese Journal of Applied Physics
Volume48
Issue number6
DOIs
StatePublished - Jun 1 2009

Fingerprint

Powders
Oxides
oxides
histories
Surface chemistry
Stoichiometry
Fourier transform infrared spectroscopy
Thermogravimetric analysis
humidity
stoichiometry
Carbonates
carbonates
Atmospheric humidity
heat treatment
x rays
X ray photoelectron spectroscopy
infrared spectroscopy
routes
photoelectron spectroscopy
Single crystals

All Science Journal Classification (ASJC) codes

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

Cite this

Sakurai, Nobuo ; Bojan, Vincent ; Stapleton, Joshua James ; Yang, Gai Ying ; Randall, Clive A. ; Mizuno, Youichi ; Chazono, Hirokazu. / Surface instability in high surface area complex oxides : BaTiO3 study. In: Japanese Journal of Applied Physics. 2009 ; Vol. 48, No. 6.
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Surface instability in high surface area complex oxides : BaTiO3 study. / Sakurai, Nobuo; Bojan, Vincent; Stapleton, Joshua James; Yang, Gai Ying; Randall, Clive A.; Mizuno, Youichi; Chazono, Hirokazu.

In: Japanese Journal of Applied Physics, Vol. 48, No. 6, 061404, 01.06.2009.

Research output: Contribution to journalArticle

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AU - Sakurai, Nobuo

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AU - Mizuno, Youichi

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