Mössbauer and magnetic study of Mn2+- and Cr 3+-substituted spinel magnesioferrites of the composition Mg 1-xMnxFe2-2xCr2xO4

H. M. Widatallah*, I. A. Al-Omari, A. M. Gismelseed, O. A. Yassin, A. D. Al-Rawas, M. E. Elzain, A. A. Yousif, O. A. Osman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Chromium and manganese co-substituted spinel magnesioferrites of the composition Mg1-xMnxFe2-2xCr2xO 4 (x=0.0, 0.1, 0.2, 0.3, and 0.5) were investigated with X-ray diffraction (XRD), Mössbauer spectroscopy and magnetic measurements. The cation distribution inferred suggests that Mn2+ and Cr3+ ions dominantly occupy the A- and B-sites respectively. The gradual decrease of the hyperfine fields and Curie temperatures with increasing x reflects a gradual weakening in the AB exchange interaction. Mössbauer data of the sample with x = 0.5 is suggestive of cation clustering and/or superparamagnetism. The magnetization data is suggestive of Yafet-Kittel-type canted magnetism.

Original languageEnglish
Pages (from-to)1325-1329
Number of pages5
JournalHyperfine Interactions
Volume169
Issue number1-3
DOIs
Publication statusPublished - Apr 2006
Externally publishedYes

Keywords

  • Magnetization
  • Mössbauer spectroscopy
  • Spinel ferrites

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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