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Structure and stability studies of electrodeposited δ-Bi2O3

Authors
Journal
Solid State Ionics
0167-2738
Publisher
Elsevier
Publication Date
Volume
176
Identifiers
DOI: 10.1016/j.ssi.2004.09.006
Keywords
  • Bismuth Oxide
  • Solid Electrolyte
  • Electrodeposition
  • Crystalline Structure

Abstract

Abstract High oxide-ion conducting material δ-Bi 2O 3 was electrodeposited on stainless steel and polycrystalline Au substrates at low temperature. Both X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM) images revealed nanocrystallites about 100 nm in size inside the electrodeposited δ-Bi 2O 3 thin films. High-resolution TEM images showed the existence of smaller nanocrystallites 10–20 nm in diameter. The long-term stability of the electrodeposited δ-Bi 2O 3 was checked by XRD measurements on 1-year-old samples. Its thermal stability was studied through a series of annealing at different temperatures. At an annealing temperature of 340 °C, the δ-Bi 2O 3 fcc structure begins to change towards that of Sillenite ( bcc).

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