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Synthesis of Nb-doped SrTiO3 by a modified glycine-nitrate process

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Author

Summary, in English

The objective of the present investigation was to develop a technique to synthesize submicronic particles of Nb-doped strontium titanate with a homogeneous composition. This was achieved by a modified glycine-nitrate process, using Ti-lactate, Nb-oxalate, and Sr(NO3)(2) as starting materials. A combination of both citric acid and glycine was needed in order to integrate the useful features of both complexation and combustion natures of citric acid and glycine, respectively. The amount of citric acid, glycine, and nitrates in the starting solution, as well as the source for extra nitrates, and the uniformity of heating during the thermal dehydration step were found to have significant influence on the final phase purity of the material. Calcination at 1100 degrees C in 7% H-2 in N-2 produced single phase Nb-doped strontium titanate with grain sizes of about 100 nm in diameter on average. (c) 2007 Elsevier Ltd. All rights reserved.

Publishing year

2007

Language

English

Pages

3609-3612

Publication/Series

Journal of the European Ceramic Society

Volume

27

Issue

13-15

Document type

Journal article

Publisher

Elsevier

Topic

  • Chemical Sciences

Keywords

  • electron microscopy
  • Nb-doped SrTiO3
  • powders-chemical preparations
  • microstructure-final

Status

Published

ISBN/ISSN/Other

  • ISSN: 0955-2219