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

Blennow Tullmar, Peter LU ; Hansen, Kent K.; Wallenberg, Reine LU and Mogensen, Mogens (2007) In Journal of the European Ceramic Society 27(13-15). p.3609-3612
Abstract
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.... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
electron microscopy, Nb-doped SrTiO3, powders-chemical preparations, microstructure-final
in
Journal of the European Ceramic Society
volume
27
issue
13-15
pages
3609 - 3612
publisher
Elsevier
external identifiers
  • wos:000248822800006
  • scopus:34347355437
ISSN
0955-2219
DOI
10.1016/j.jeurceramsoc.2007.02.009
language
English
LU publication?
yes
id
4c82b3d6-09b4-433a-a79f-fb6acbfb0cfb (old id 691590)
date added to LUP
2007-12-04 17:06:49
date last changed
2017-07-23 04:32:51
@article{4c82b3d6-09b4-433a-a79f-fb6acbfb0cfb,
  abstract     = {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.},
  author       = {Blennow Tullmar, Peter and Hansen, Kent K. and Wallenberg, Reine and Mogensen, Mogens},
  issn         = {0955-2219},
  keyword      = {electron microscopy,Nb-doped SrTiO3,powders-chemical preparations,microstructure-final},
  language     = {eng},
  number       = {13-15},
  pages        = {3609--3612},
  publisher    = {Elsevier},
  series       = {Journal of the European Ceramic Society},
  title        = {Synthesis of Nb-doped SrTiO3 by a modified glycine-nitrate process},
  url          = {http://dx.doi.org/10.1016/j.jeurceramsoc.2007.02.009},
  volume       = {27},
  year         = {2007},
}