Title of article :
Quantitative determination of Eu2+ and Eu3+ content in (Eu,Y)–Si–Al–O–N glasses by magnetic measurements
Author/Authors :
de Graaf، نويسنده , , D. and Hintzen، نويسنده , , H.T. and de With، نويسنده , , G. and Ramanujachary، نويسنده , , K.V. and Lanci، نويسنده , , C. and Lofland، نويسنده , , S.E.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
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+.
Keywords :
A. Oxynitride , A. Disordered systems , A. Europium , D. Valence , D. Magnetic susceptibility
Journal title :
Solid State Communications
Journal title :
Solid State Communications
