Preparation of BaTiO3 Thin Film by Hydrothermal Electrochemical Method
- 1 November 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (11A) , L2007
- https://doi.org/10.1143/jjap.28.l2007
Abstract
BaTiO3 thin films have been prepared in situ on Ti metal substrates by a hydrothermal electrochemical technique, where a direct current has been passed between the anode, Ti plate, and the cathode, Pt plate, in high-temperature, high-pressure Ba2+ solutions. Dense thin films, 0.1~0.3 µm thick, which consist of cubic BaTiO3 polycrystals without apparent pores or defects have been obtained under the following conditions: in 0.25~0.5 N-Ba(OH)2 solutions above 100°C under saturated vapor pressures with the current density of 10~100 mA/cm2 after 30~80 min. These films are paraelectric with the dielectric constant of ≈300.Keywords
This publication has 3 references indexed in Scilit:
- Direct preparation of BaTiO3 powders from titanium metal by anodic oxidation under hydrothermal conditionsJournal of Materials Science Letters, 1989
- Preparation and Properties of Thin Barium Titanate FilmsJournal of the Electrochemical Society, 1964
- Formation of Thin Films of BaTiO3 by EvaporationReview of Scientific Instruments, 1955