EPR and magnetic properties of Gd3+ in oxide glasses

J. Kliava, I. Edelman, A. Potseluyko, E. Petrakovskaja, R. Berger, I. Bruckental, Y. Yeshurun, A. Malakhovskii, T. Zarubina

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Abstract

Magnetic susceptibility and EPR have been studied in a glass system xGd2O3 ·(20-x) · La2O3 · 22Al2O3 · 23B2O3 · 35(SiO2+GeO2) with x = 0.03, 0.35, 1.75 and 3.5mol%. Positive Weiss constants have been found in more heavily-doped glasses and ascribed to clustering of Gd3+ ions. In less-doped glasses the EPR spectra have a typical "U"-type shape; at higher doping levels the spectral features are broadened. Computer simulations show that in the latter case the spectra are superposition of signals arising from isolated ions and ferromagnetic clusters.

Original languageEnglish
Pages (from-to)e1647-e1649
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberSUPPL. 1
DOIs
StatePublished - May 2004

Keywords

  • Electron paramagnetic resonance
  • Gadolinium
  • Magnetic susceptibility
  • Oxide glasses

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