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Title: Physical properties of PbO-Al2O3-B2O3 glasses doped with Cr2O3
Authors: Reddy, M Rami
Reddy, M Srinivasa
Veeraiah, N
Keywords: PbO-Al2O3-B2O3
Chromium ions
Optical absorption
Dielectric properties
Issue Date: Jun-2006
Publisher: CSIR
IPC CodeG01R 27/26, F21K 2/04
Abstract: PbO-Al2O3-B2O3 glasses containing different concentrations of Cr2O3 ranging from 0 to 0.4 mol % were prepared. The dielectric properties (constant e, loss tand, ac conductivity sac over a range of frequency and temperature and breakdown strength) of these glasses have been studied. The results of these studies were analyzed with the aid of data on optical absorption, IR spectra and thermoluminescence studies on these glasses. The analysis suggests that the chromium ions exist in Cr3+ state which act as modifiers. When Cr2O3 is present in higher concentrations in the glass matrix, these ions seem to exist in Cr6+ state and take part in network forming positions with structural units.
Page(s): 446-454
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.44(06) [June 2006]

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