Journal article
Stoichiometric control in Bi4Ti3O12 synthesis by novel hybrid solid state reaction
Department of Energy Conversion and Storage, Technical University of Denmark1
Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark2
Silpakorn University3
Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark4
The synthesis of bismuth titanate Bi4Ti3O12 (BiT) is performed via a novel solid state reaction. The reaction is designed to control the stoichiometric content of the highly volatile element, i.e. Bi. The chemical route consists in trapping bismuth oxide colloids in a stabilized titanium based sol gel solution.
The resulting colloidal-solution hybrid ink can be processed via various ceramic processes. After gelation of TiO2 in the sol-gel component the mixture reacts at high temperature (850 °C) to yield the BiT phase. The obtained material is c-axis oriented, and its lattice parameters, shrinkage and density matches the pure Bi4Ti3O12 phase.
The sintered material exhibits enhanced higher dielectric constant (2 3 2) than usually reported for this phase.
Language: | English |
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Year: | 2018 |
Pages: | 101-103 |
ISSN: | 18734979 and 0167577x |
Types: | Journal article |
DOI: | 10.1016/j.matlet.2018.03.130 |
ORCIDs: | 0000-0002-9142-7362 , Gadea, C. , Grivel, J.-C. and Esposito, V. |