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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.
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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

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References

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