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Publication
Materials Research Bulletin
Paper
Preparation and properties of fluorozirconate glasses containing divalent europium
Abstract
The glass forming region of the (ZrF4BaF2ThF4)EuF2 system has been studied. EuF2 was found to replace up to about 85% of the BaF2 in a glass with a composition .615 ZrF4, .32BaF2, .07ThF4. The glass transition temperature is seen to increase with the EuF2 concentration. The 4f7→ 4f65d1 transition of the Eu+2 ion in the glass matrix was studied by optical absorption and compared with data taken on crystalline compounds containing Eu+2 in different environments. It is concluded from these results that the Eu+2 ion - and also the Ba+2 ion - is coordinated by 12 fluorides in the glass. © 1979.