Structure and some physical properties of PbO-P2O5

被引：131

作者：

El-Egili, K ^{[1
]}

Doweidar, H ^{[1
]}

Moustafa, YM ^{[1
]}

Abbas, I ^{[1
]}

机构：

[1] Mansoura Univ, Fac Sci, Dept Phys, Glass Res Grp, Mansoura 35516, Egypt

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 339卷 / 04期

关键词：

phosphate; infrared; DC conductivity; structure; glasses;

D O I：

10.1016/j.physb.2003.07.005

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Glasses in the system xPbO . (100-x)P2O5(X = 25-60 mol %) have been investigated using IR spectroscopy and by means of density and electrical-resistivity measurements. The infrared spectra revealed that for PbO<50mol% PbO enters the structure as a network modifier forming non-bridging oxygen ions. For PbO > 50 mol% PbO also plays the role of a network former. The greater rate of density increase for PbO > 50 mol% is due to the formation of PbO4 units. The conductivity of these glasses depends mainly on the mobility of Pb2+ ions. The variation of the electrical conductivity parameters upon changing the composition have been correlated with the structural changes in the glass matrix. Crown Copyright (C) 2003 Published by Elsevier B.V. All rights reserved.

引用

页码：237 / 245

页数：9

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