Magnetic and Mössbauer study of Mg0.9Mn 0.1CrxFe2-xO4 ferrites

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Abstract

The ferrites Mg0.9Mn0.1CrxFe 2-xO4 (0 ≤ × ≤ 0.9)) were prepared using the conventional double sintering method. The XRD showed that the samples maintain a single spinel cubic phase. The Mössbauer measurements were carried out at room and liquid nitrogen temperatures. From the area ratios of the A and B sites, it was found that the Fe cation population of the A and B sites decreases in proportion to Cr concentration. The contact hyperfine fields at the A and B sites were found to decrease with increasing Cr contents. This was found to be in approximate agreement with the results of magnetization measurement. The distributions of Mg and Mn cations versus Cr concentration were also determined using the Mössbauer and magnetization results. The Curie temperatures were determined and found to agree with the reported values. As the Cr contents increases the relative magnetization, was found to increase at low temperatures and decreases at higher temperatures.

Original languageEnglish
Pages (from-to)1151-1157
Number of pages7
JournalHyperfine Interactions
Volume168
Issue number1-3
DOIs
Publication statusPublished - Feb 2006

Keywords

  • Ferrites
  • Magnetization
  • Mössbauer spectroscopy
  • Neel temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Nuclear and High Energy Physics

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