Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2728
Title: Synthesis of SrBi2Ta2O9 (SBT) by means of a soluble Ta(V) precursor
Authors: NELIS, Daniel 
VAN WERDE, Kristof 
MONDELAERS, Dirk 
VANHOYLAND, Geert 
VAN BAEL, Marlies 
MULLENS, Jules 
VAN POUCKE, Lucien 
Issue Date: 2001
Publisher: ELSEVIER SCI LTD
Source: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 21(10-11). p. 2047-2049
Abstract: Aqueous sol-gel processing of pentavalent metals like Ta and Nib is very complicated since the only water soluble compound is the oxalate, which is not very suited for gel formation. Nevertheless, starting from Ta oxalate, it is possible to prepare a water soluble Ta(V) precursor that remains stable in the pH range needed for gel formation. During synthesis the oxalate is oxidized with H2O2 and subsequently complexed with citric acid and as a result the peroxo-citrato tantalum(V) complex is formed. This Ta(V) precursor is afterwards used for the synthesis of the ferroelectric SrBi2Ta2O9 (SBT). The formation of the SBT crystalline phases was investigated by means of high temperature X-ray diffraction (HT-XRD). (C) 2001 Elsevier Science Ltd. All rights reserved.
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.
Keywords: perovskites; sol-gel processes; SrBi2Ta2O9 (SBT); tantalates
Document URI: http://hdl.handle.net/1942/2728
ISSN: 0955-2219
e-ISSN: 1873-619X
DOI: 10.1016/S0955-2219(01)00169-8
ISI #: 000170430000166
Category: A1
Type: Journal Contribution
Validations: ecoom 2002
Appears in Collections:Research publications

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