Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-25T17:33:53.930Z Has data issue: false hasContentIssue false
  • English
  • Français

BaTiO3 Thin Films Prepared By Dip-Coating Process

Published online by Cambridge University Press:  15 February 2011

Nelcy Della  and
Santina Mohallem
Nelcy Della
Affiliation:
Departamento de Química, ICEx. UFMG, CEP 31270-901
Santina Mohallem
Affiliation:
Belo Horizonte, MG, Brasil
Get access

Abstract

Thin films of pure barium titanate have been prepared by the sol-gel process from organomettalic sols containing titanium alkoxides and barium acetate (molar ratio [Ba]/[Ti]=l). It leads to transparent, homogeneous and adherent coatings. The influence of various parameters such as chemical concentration, viscosity, withdrawal speed and temperature of densification on film thickness is described. The films were characterized by X-ray diffraction during their heat treatment. Their crystallization temperature was observed to be around 450°C. No variations in the optical properties were observed during the crystallization, and it occurred without the appearance of cracks or pinholes. Tetragonal BaTiO3 structure was observed, and the ferroeletric properties were investigated as functions of thickness and grain size.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 341: Symposium F – Epitaxial Oxide Thin Films and Heterostructures , 1994 , 379
Copyright
Copyright © Materials Research Society 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Schroeder, H., Phys. Thin Films 5, 87(1969).Google Scholar
2. Strawbreidge, I. and James, P. F., J. Non Cryst. Solids 86, 381(1896).Google Scholar
3. Mohallem, N. D. S., Thesis, University of São Paulo (1990)Google Scholar