Hostname: page-component-669899f699-7xsfk Total loading time: 0 Render date: 2025-04-25T01:03:01.157Z Has data issue: false hasContentIssue false
  • English
  • Français

Electron Spin Resonance (Esr) Study of VO2+ Doped Germanium Dioxide Synthesized Via the Sol-Gel Process

Published online by Cambridge University Press:  21 February 2011

Juan Mendez-Vivar  and
R. Arroyo
Juan Mendez-Vivar
Affiliation:
Universidad Autónoma Metropolitana-Iztapalapa, Depto. de Química, A. P. 55-534 México, D. F. 09340, México.
R. Arroyo
Affiliation:
Universidad Autónoma Metropolitana-Iztapalapa, Depto. de Química, A. P. 55-534 México, D. F. 09340, México.
Get access

Abstract

VOSO4.3H2O was used as doping agent to prepare GeO2 xerogels, via the sol-gel process. Samples were analyzed by Thermal Gravimetric Analysis (TGA), Differential Thermal Analysis, (DTA), Diffuse reflectance (UV-Vis) spectroscopy and electron spin resonance (ESR). Study of thermally treated samples was done. VO2+ were found in V2O5 at 350 °C. VO2+ ions were incorporated to the GeO2 network after thermal treatment at 700 °C. From the results we propose that VO2+ acts as crystal former in these samples.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 243
Copyright
Copyright © Materials Research Society 1998

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

1 Margaryan, A. A., J. Mat. Sei. Lett., 10, 1425(1991).Google Scholar
2 Lisong, H. and Sakka, S., J. Non-Cryst. Solids, 112, 424(1989).Google Scholar
3 Hirashima, H. and Sudo, K., J. Non-Cryst. Solids, 121, 68(1990).Google Scholar
4 Méndez-Vivar, J., Bosch, P., Lara, V. H., J. Cryst. Growth, SubmittedGoogle Scholar
5 Ballhausen, C. J. and Gray, H. B., Inorg. Chem., 1, 111(1962).Google Scholar
6 Fritsch, E., Babonneau, F., Sanchez, C. and Calas, G., J. Non-Cryst. Solids , 92, 282(1987).Google Scholar
7 Lever, A. B. P., Inorganic Electronic Spectroscopy, 2nd ed. (Elsevier, 1984), p. 327.Google Scholar
8 Livage, J., Chem. Mater.,3 (4), 578(1991).Google Scholar