Otro
Preparation and properties of ferroelectric BaTiO3 thin films produced by the polymeric precursor method
Registro en:
Journal of Materials Science Letters, v. 19, n. 16, p. 1457-1459, 2000.
0261-8028
10.1023/A:1011027624446
WOS:000088901300015
2-s2.0-0034250975
Autor
Lee, E. J. H.
Pontes, F. M.
Leite, E. R.
Longo, Elson
Varela, José Arana
Araujo, E. B.
Eiras, J. A.
Resumen
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.