Magnetic properties of praseodymium ions in Na2O-Pr2O3-SiO2 glasses

A. Mekki*, Kh A. Ziq, D. Holland, C. F. McConville

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Sodium praseodymium silicate glasses of nominal composition 0.3Na2O xPr2O3 (0.7-x)SiO2, where 0 ≤ x ≤ 0.10, have been studied by magnetisation and X-ray photoelectron spectroscopy (XPS). The magnetisation data fail to collapse to a single curve in the M versus H/T representation for all values of x and the spread increases with x, indicating an increase in the magnetic exchange interaction. The M versus H data acquired at different temperatures have been fitted with a Brillouin function by refining the number of Pr3+ ions in each glass sample. It was found that most of the Pr ions are in Pr3+ valence state and only a small fraction (≤ 5%) in the Pr4+ state. Analysis of the XPS line shape indicates only the presence of Pr3+ ions in these glasses.

Original languageEnglish
Pages (from-to)60-69
Number of pages10
JournalJournal of Magnetism and Magnetic Materials
Volume260
Issue number1-2
DOIs
StatePublished - Mar 2003

Bibliographical note

Funding Information:
Two of the authors (A.M. and K.A.Z.) would like to acknowledge the support of King Fahd University of Petroleum and Minerals.

Keywords

  • Glass
  • Magnetisation
  • PrO
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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