Journal of the Ceramic Society of Japan
Online ISSN : 1882-1022
Print ISSN : 0914-5400
Phonon Sideband Spectra and Local Structure around Eu3+ Ions in Aluminosilicate Glasses
Shin-ichi TODOROKIKazuyuki HIRAONaohiro SOGA
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1993 Volume 101 Issue 1177 Pages 1065-1067

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Abstract

The local structure around Eu3+ ions in sodium aluminosilicate glasses was investigated on the basis of phonon sideband associated with the 5D07F0 transition of Eu3+. It was found that the positive charge of Eu3+ was compensated by nonbridging oxygens (NBOs) in Q3 units rather than by the excess negative charge of AlOn/2(n-3)- units. With the aid of a previous work of Mössbauer results, the coordination change around Eu3+ ions induced by an incorporation of Al has been discussed. It was assumed that NBO-Na+ pairs are replaced by bridging oxygens shared with Si and Al.

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