| Issue |
Eur. Phys. J. AP
Volume 16, Number 1, October 2001
|
|
|---|---|---|
| Page(s) | 11 - 22 | |
| Section | Surfaces, Interfaces and Films | |
| DOI | https://doi.org/10.1051/epjap:2001188 | |
| Published online | 15 October 2001 | |
https://doi.org/10.1051/epjap:2001188
Influence of Cr3+ ions on the structure and certain physical properties of PbO-As2O3 glasses
Department of Physics, Nagarjuna University PG Centre, Nuzvid-521 201 AP, India
Corresponding author: nveeraiah@usa.net
Received:
7
November
2000
Revised:
5
June
2001
Accepted:
8
June
2001
Published online: 15 October 2001
PbO-As2O3 glasses containing different concentrations of Cr2O3 (ranging
from 0 to 0.4 mol% ) were prepared. The differential thermal analysis, IR and
optical absorption spectral studies of these glasses were carried out; from these studies,
the variations in the values of glass transition and crystallization temperatures, optical
band gap and the shifting of symmetrical bending vibrational frequency band were observed
with increase in concentration of Cr2O3. Magnetic susceptibilities for these glasses were
also determined and Cr3+ ion concentration was estimated. In addition, detailed studies on
dielectric properties viz., dielectric constant ε, loss tan δ, ac conductivity 
and
dielectric breakdown strength were investigated. Using the results of these studies, the
structural modifications taking place in the glass network were discussed in the light of
Cr3+ ion concentration.
PACS: 61.43.Fs – Glasses / 77.22.Gm – Dielectric loss and relaxation
© EDP Sciences, 2001
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