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Structural Properties of Strontium Vanadate Glasses

Published online by Cambridge University Press:  31 January 2011

S. Sen  and
A. Ghosh
S. Sen
Affiliation:
Solid State Physics Department, Indian Association for the Cultivation of Science, Jadavpur, Calcutta-700032, India
A. Ghosh*
Affiliation:
Solid State Physics Department, Indian Association for the Cultivation of Science, Jadavpur, Calcutta-700032, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Structural studies of the strontium vanadate glasses of compositions xV2O5–(100 − x)SrO are reported. X-ray diffractograms, density, and oxygen molar volume, etc., of the glasses show that single-phase and homogeneous glasses were obtained in the composition domain x = 50 to 90 mol%. The network structure for the glass compositions with 90 and 80 mol% V2O5 is built up of the VO5 polyhedra, while the other glass compositions consist of the VO4 polyhedra. Density and glass transition temperature are observed to decrease with an increase in the V2O5 content. The magnetic susceptibility of the glasses shows an increase of concentration of the reduced V4+ ion with the increase of vanadium oxide content in the compositions. The well-resolved electron spin resonance structure observed for the glass composition with 50 mol% V2O5 gradually becomes poor and reduces to a single component line, which has been attributed to the increase of the hopping rate of charge carriers with the increase of the V2O5 content in the compositions.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 4 , April 2000 , pp. 995 - 999
Copyright
Copyright © Materials Research Society 2000

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References

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