Quantitative determination of Eu2+ and Eu3+ content in (Eu, Y)-Si-Al-O-N glasses by magnetic measurements

D. Graaf, de, H.T.J.M. Hintzen, G. With, de, K.V. Ramanujachary, C. Lanci, S.E. Lofland

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Abstract

This paper describes a method to determine the oxidation state of europium by means of magnetic measurements. The feasibility of this method is demonstrated using Eu-doped Y¿Si¿Al¿O¿N glasses as a model system. Magnetic measurements at (Eu,Y)¿Si¿Al¿O¿N glasses show that Eu is completely present as divalent ion for low Eu concentrations (Eu0.152Y15.0Si14.7Al8.7O54.1N7.4). At high Eu concentrations (Eu15.2Si14.7Al8.7O54.1N7.4) a maximum of 5 at.% could be present as Eu3+.
Original languageEnglish
Pages (from-to)693-696
JournalSolid State Communications
Volume131
Issue number11
DOIs
Publication statusPublished - 2004

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