SOME STRUCTURAL, ELECTRICAL AND OPTICAL-PROPERTIES OF COPPER PHOSPHATE-GLASSES CONTAINING THE RARE-EARTH EUROPIUM

被引：30

作者：

ARZEIAN, JM

HOGARTH, CA

机构：

[1] Department of Physics, Brunei University, Uxbridge, UB8 3PH, Middlesex

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 19期

关键词：

D O I：

10.1007/BF01143233

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Various properties of copper phosphate glass containing small amounts of the rare-earth europium have been investigated in the two glass systems Eu2O3-CuO-P2O5 and Eu2O3-CaO-CuO-P2O5. Density and molar volumes showed an increase as Eu2O3 replaced CuO and CaO in the glass compositions. Enhanced reduction from Cu2+ to Cu+ valency states of the ions in the glasses due to the presence of europium has been inferred from the results of electron spectroscopy for chemical analysis, and confirmed by results of electron spin resonance measurements. Corresponding electrical and optical band-gap characteristics, however, showed little systematic variation. The tetrahedral structure of P2O5 appeared to dominate the structural characteristics and infrared behaviour of the glass. The results are interpreted in terms of molecular structure, electronic configuration and small polaron hopping models. The role of europium in the glass is discussed.

引用

页码：5353 / 5366

页数：14

共 27 条

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