Hostname: page-component-8448b6f56d-jr42d Total loading time: 0 Render date: 2024-04-16T11:33:22.373Z Has data issue: false hasContentIssue false
  • English
  • Français

Stabilization, Characterization and Optical Applications of Niobium and Tantalum Oxide Sols Prepared Via Alkoxide Routes

Published online by Cambridge University Press:  28 February 2011

Stephen Parraud ,
Liliane G. Hubert-Pfalzgraf  and
Herve Floch
Stephen Parraud
Affiliation:
Laboratoire de Chimie Moléculaire,Associé au CNRS,Université de Nice-Sophia Antipolis,Parc Valrose,06034 Nice,France
Liliane G. Hubert-Pfalzgraf
Affiliation:
Laboratoire de Chimie Moléculaire,Associé au CNRS,Université de Nice-Sophia Antipolis,Parc Valrose,06034 Nice,France
Herve Floch
Affiliation:
Commissariat a l'Energie Atomique, Centre de Limeil-Valenton,94195 Villeneuve St Georges Cedex,France
Get access

Abstract

Hydrolysis of niobium and tantalum pentaethoxides in ethanol and in the presence of basic (ammonia, tetramethylammonium hydroxide, di and triethylamine) or acidic (nitric or hydrochloric acids) additives was investigated. Triethylamine gives monodispersed, small particles of amorphous M2O5,nH2O (M = Nb, Ta). These colloidal suspensions were used to obtain thin films by spin-coating techniques. The coatings display a thickness of 100–300 nm and a refractive index around 1.7. Laser damage tests at 1064 nm wavelength with a pulse length of 3 ns were carried out on the single layer systems. The threshold values (one-onone) are in favor of the Ta2O5 coatings with an average of 14.5 ± 2.1 J/cm2 , by comparison with 8.3 ± 1.6 J/cm2 for the Nb2O5 films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 180: Symposium A – Better Ceramics Through Chemistry IV , 1990 , 397
Copyright
Copyright © Materials Research Society 1990

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

REFERENCES

1. Schroeder, H., Physics of Thin Films 5, 87 (1969);Google Scholar
1a Martinsen, J., Figot, R.A. and Shafer, M.W., Mater. Res. Soc. Symp. Proc. 32, 145 (1984).Google Scholar
2. Thomas, I.M., Appl. Optics 26, 4688 (1987).Google Scholar
3. Tanabe, K. and Ilzuka, T., “Catalytic Properties of Niobium Compounds”, Technical Reports CBMM (Parts I,II, 1II) (03/83, 07/85, 08/85).Google Scholar
4. Bradley, D.C., Chakravarti, B.N. and Wardlaw, W., J. Chem. Soc. 1956, 2381.Google Scholar
5. Hubert-Pfalzgraf, L.G., New J. Chem. 11, 663 (1987).Google Scholar
6. Ling, H.C., Yan, M.F. and Rhodes, W.W., “Science of Chemical Processing”, Ed. Hench, L.L., Ulrich, D.R.; Wiley, New York, 198 , 285.Google Scholar
7. Nakanishi, K., Takamiya, Y. and Shimohira, T., Yogyo Kyokai-Shi 94, 1024 (1986).Google Scholar
8. Yoldas, B.E., O'Keeffe, T.W., Appl. Optics 18, 3133 (1979).Google Scholar
9. Floch, H. and Priotton, J.J., Proc. 21st Boulder Damage Symposium Colorado Nov. 1989.Google Scholar