Document Details

Document Type : Article In Journal 
Document Title :
Characterization of some lead vanadate glasses
خصائص فيزيائية لبع زجاجيات من الرصاص والفانديوم
 
Subject : Infrared and ultra sonic 
Document Language : English 
Abstract : Studies on lead vanadate glasses modified with Li2O have been carried out. Elastic properties and Debye temperature have been investigated using sound velocity measurements at 4 MHz. The ultrasonic and the IR spectroscopic studies have been employed to investigate the structure of lead vanadate glasses in the presence of Li2O. IR analysis indicates that increasing the vanadate content causes a shift of the bands to higher wave number and to higher relative area which was attributed to the higher dissociation energy of V2O5 than that of PbO. Thus, the average force constant of VO5 structural units increases with increasing V2O5 content. The change of density and molar volume with V2O5 content reveals that the decrease in density is related to the replacement of high dense PbO with low dense one V2O5, where the increase in the molar volume can be attributed to the larger packing factor of V2O5 than that of PbO. The observed compositional dependence of the elastic moduli is interpreted in terms of the effect of V2O5 on the coordination number of the vanadate and lead structural units. 
ISSN : 11-063 
Journal Name : Journal of Alloys and Compounds 
Volume : 478 
Issue Number : 478 
Publishing Year : 1430 AH
2009 AD 
Article Type : Article 
Added Date : Wednesday, December 29, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
كمال عبدالنبي عليAli, Kmal AbdualnabiResearcherDoctorate 

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