Preparation of Barium Titanate Films at 55°C by an Electrochemical Method

Priya Bendale, Sridhar Venigalla, John R. Ambrose, Ellis D. Verink, James Hansell Adair

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

Work by previous investigators has shown that BaTiO3 films can be synthesized from solution over temperature ranges from 80°C to greater than 200°C. In the present work, electrically insulating crystalline films of BaTiO3 have been electrochemically deposited on titanium substrates at temperatures as low as 55°C. Auger spectroscopic analyses with depth profiling indicate that a titanium oxide layer whose thickness is governed by current density acts as a precursor to BaTiO3. Formation of BaTiO3 is found to be favored only in highly alkaline solutions. This is consistent with the phase stability reported for the Ba─Ti─CO2─H2O system at 25°C. Lower processing temperatures (55°C) favor the formation of thick, electrically resistive, and wellcrystallized BaTiO3 films, apparently due to increased oxygen solubility in the electrolyte solution. Films produced at 100°C are much thinner and are electrically conductive due to fissures and pores in their microstructure. Initial studies on the effect of current density indicate the formation of thinner and porous films with thicker titanium oxide intermediate layers.

Original languageEnglish (US)
Pages (from-to)2619-2627
Number of pages9
JournalJournal of the American Ceramic Society
Volume76
Issue number10
DOIs
StatePublished - Jan 1 1993

Fingerprint

titanate
electrochemical method
Barium titanate
barium
titanium
Titanium oxides
Current density
oxide
Phase stability
Depth profiling
temperature
Titanium
fissure
Temperature
electrolyte
Electrolytes
microstructure
solubility
Solubility
Oxygen

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Bendale, Priya ; Venigalla, Sridhar ; Ambrose, John R. ; Verink, Ellis D. ; Adair, James Hansell. / Preparation of Barium Titanate Films at 55°C by an Electrochemical Method. In: Journal of the American Ceramic Society. 1993 ; Vol. 76, No. 10. pp. 2619-2627.
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Preparation of Barium Titanate Films at 55°C by an Electrochemical Method. / Bendale, Priya; Venigalla, Sridhar; Ambrose, John R.; Verink, Ellis D.; Adair, James Hansell.

In: Journal of the American Ceramic Society, Vol. 76, No. 10, 01.01.1993, p. 2619-2627.

Research output: Contribution to journalArticle

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