Preparation and properties of ferroelectric BaTiO3 thin films produced by the polymeric precursor method
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Data
2000-08-01
Autores
Lee, E. J. H.
Pontes, F. M.
Leite, E. R.
Longo, Elson [UNESP]
Varela, José Arana [UNESP]
Araujo, E. B.
Eiras, J. A.
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Resumo
Ferroelectric barium titanate thin films were produced by the polymeric precursor method. In this technique, the desired metal cations are chelated in a solution using a hydroxycarboxylic acid as the chelating agent. Barium carbonate and titanium IV isopropoxide were used as precursors for the citrate solution. Ethylene glycol and citric acid were used as polymerization/complexation agents for the process. The crystalline structure of the film annealed at 700 °C had a single perovskite phase with a tetragonal structure. The BaTiO3 film showed good P-E hysteresis loops and C-V characteristics due to the switched ferroelectric domains.
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Atomic force microscopy, Barium titanate, Complexation, Ferroelectricity, Glycols, Hysteresis, Perovskite, Polymerization, Scanning electron microscopy, Thin films, X ray diffraction, Metal-ferroelectric-metal capacitors, Polymeric precursor method, Ferroelectric materials
Como citar
Journal of Materials Science Letters, v. 19, n. 16, p. 1457-1459, 2000.