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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2479

Title: Aqueous solution-gel synthesis of strontium bismuth niobate (SrBi2Nb2O9)
Authors: NELIS, Daniel
VAN WERDE, Kristof
MONDELAERS, Dirk
VANHOYLAND, Geert
VAN DEN RUL, Heidi
VAN BAEL, Marlies
MULLENS, Jules
VAN POUCKE, Lucien
Issue Date: 2003
Publisher: KLUWER ACADEMIC PUBL
Citation: JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 26(1-3). p. 1125-1129
Abstract: The synthesis of multimetal oxides containing pentavalent elements like Nb and Ta out of an aqueous solution is very complicated due to the extremely high sensitivity of these metals towards hydrolysis. Moreover the only water-soluble starting compound is the oxalate which is not very suited for gel formation. Nevertheless, from Nb-oxalate it is possible to prepare a water-soluble Nb(V)-precursor by chemical modification. The synthesized precursor remains stable in the pH-range needed for gel formation. This Nb(V)-precursor is used for the synthesis of the ferroelectric material SrBi2Nb2O9 (SBN). An aqueous acetate-citrate solution-gel precursor for SBN was prepared. The chemical homogeneity of this precursor was investigated by means of TEM-experiments. All metal ions were found to be homogeneously dispersed in the precursor gel at least down to 10 nm. The SBN phase formation is followed by means of X-ray Diffraction. It has been shown that the perovskite phase already forms at 550degreesC.
Notes: Limburgs Univ Ctr, Lab Inorgan & Phys Chem, IMO, B-3590 Diepenbeek, Belgium.Mullens, J, Limburgs Univ Ctr, Lab Inorgan & Phys Chem, IMO, Univ Campus, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/2479
DOI: 10.1023/A:1020771126807
ISI #: 000178789100208
ISSN: 0928-0707
Category: A1
Type: Journal Contribution
Validation: ecoom, 2003
Appears in Collections: Research publications

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