Structural characterization and magnetic properties of NiMg 3x/2Cr0.9Fe1.1-x O4

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Abstract

Magnesium-substituted nickel-chrome ferrites have been studied using X-ray diffraction and Mössbauer spectroscopy. A single cubic spinel phase was obtained in the range 0.0≤x≤0.4. The lattice parameter was found to decrease with the increase of Mg concentration. The Mössbauer spectra measured at 295 and 78 K of all samples showed magnetic patterns interpreted in term of the tetrahedral and octahedral sites occupancies. The magnetic hyperfine field of both sites decrease with the increase of the Mg concentration. The magnetic properties as a function of the Mg concentration have been explained on the basis of the cation distribution among the two crystallographic sites driven from the Mössbauer measurements.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalHyperfine Interactions
Volume184
Issue number1-3
DOIs
Publication statusPublished - Jun 2008

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Keywords

  • Magnesium
  • Magnetic properties
  • Mössbauer measurements
  • Structural characterization

ASJC Scopus subject areas

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

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