Nucleation and Inhibition Control during the Hydrothermal–Electrochemical Growth of Barium Titanate Films
Author
dc.contributor.author
Escobar, Ivan S.
Author
dc.contributor.author
Silva, Carmen I.
es_CL
Author
dc.contributor.author
Vargas Valero, Tomás
es_CL
Author
dc.contributor.author
Fuenzalida, Victor M.
es_CL
Admission date
dc.date.accessioned
2014-01-03T13:16:16Z
Available date
dc.date.available
2014-01-03T13:16:16Z
Publication date
dc.date.issued
2000
Cita de ítem
dc.identifier.citation
J. Am. Ceram. Soc., 83 [11] 2673–76 (2000)
en_US
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/125942
Abstract
dc.description.abstract
The control of the microstructure of BaTiO3 films grown on
titanium by the hydrothermal–electrochemical method was
investigated. Experiments were conducted in a three-electrode
high-pressure electrochemical cell in a 0.1M Ba(OH)2 electrolyte
at 150°C. Results showed that the spontaneous initial
nucleation linked to pure hydrothermal BaTiO3 formation can
be inhibited by cathodically protecting the titanium electrode
from the moment it is immersed in the electrolyte. The
application of initial nucleation pulses of varying cathodic
potentials affected the grain size of the deposit. It is suggested
that the formation of a titanium oxide layer is a necessary step
previous to the nucleation of BaTiO3.