Advertisement

Journal of Sol-Gel Science and Technology

, Volume 8, Issue 1–3, pp 759–763 | Cite as

Bi4Ti3O12 thin films from mixed bismuth-titanium alkoxides

  • F. Soares-Carvalho
  • P. Thomas
  • J. P. Mercurio
  • B. Frit
  • S. Parola
Article

Abstract

Bi4Ti3O12 thin films were obtained by the sol-gel method. The precursor solution was prepared by allowing the two metallic alkoxides, Bi(OC2H4OCH3)3 and Ti(OC2H4OCH3)4, to react in 2-methoxy-ethanol to form the mixed alkoxide. This stable sol was deposited by spin-coating onto platinized silicon substrates. X-Ray diffraction patterns indicate that the perovskite initial crystallization temperature is 460°C for powder samples and it ranges between 400 and 500°C, for thin films, as a function of the number of coating layers. Dense, smooth and crack free thin films with grain sizes ranging from 20 nm to 500 nm are obtained, depending on the number of coating layers and on the post-deposition temperature annealing.

Keywords

sol-gel bismuth titanate spin-coating thin films ferroelectric 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J.F. Scott and C.A. Araujo, Science246, 1400 (1989).Google Scholar
  2. 2.
    P.C. Joshi and S.B. Krupanidhi, Journal of Applied Physics72(12), 5827 (1992).CrossRefGoogle Scholar
  3. 3.
    R. Papiernik, L. Hubert-Pfalzgraf, S. Parola, S. Jagner, F. Soares-Carvalho, P. Thomas, and J.P. Mercurio, inBetter Ceramics Through Chemistry VI, edited by A.K. Cheetham, C.J. Brinker, M.L. Mecartney, and C. Sanchez (1994), vol. 346.Google Scholar
  4. 4.
    E. Dayalan, C.H. Peng, and S.B. Desu, Ferroelectric Films279 (1992).Google Scholar

Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • F. Soares-Carvalho
    • 1
  • P. Thomas
    • 1
  • J. P. Mercurio
    • 1
  • B. Frit
    • 1
  • S. Parola
    • 2
  1. 1.Laboratoire de Matériaux Céramiques et Traitements de SurfacesURA 320 CNRSLimoges CedexFrance
  2. 2.Laboratoire de Chimie MoléculaireURA 426 CNRSNice Cedex 2France

Personalised recommendations