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

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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

Fingerprint

spinel
Cations
Positive ions
Superparamagnetism
cations
Exchange interactions
Magnetic variables measurement
Magnetism
Chromium
Curie temperature
Manganese
Chemical analysis
magnetic measurement
manganese
chromium
Magnetization
temperature distribution
Spectroscopy
Ions
X ray diffraction

Keywords

  • Magnetization
  • Mössbauer spectroscopy
  • Spinel ferrites

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

Cite this

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title = "M{\"o}ssbauer and magnetic study of Mn2+- and Cr 3+-substituted spinel magnesioferrites of the composition Mg 1-xMnxFe2-2xCr2xO4",
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), M{\"o}ssbauer 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. M{\"o}ssbauer 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.",
keywords = "Magnetization, M{\"o}ssbauer spectroscopy, Spinel ferrites",
author = "Widatallah, {H. M.} and Al-Omari, {I. A.} and Gismelseed, {A. M.} and Yassin, {O. A.} and Al-Rawas, {A. D.} and Elzain, {M. E.} and Yousif, {A. A.} and Osman, {O. A.}",
year = "2006",
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language = "English",
volume = "169",
pages = "1325--1329",
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TY - JOUR

T1 - Mössbauer and magnetic study of Mn2+- and Cr 3+-substituted spinel magnesioferrites of the composition Mg 1-xMnxFe2-2xCr2xO4

AU - Widatallah, H. M.

AU - Al-Omari, I. A.

AU - Gismelseed, A. M.

AU - Yassin, O. A.

AU - Al-Rawas, A. D.

AU - Elzain, M. E.

AU - Yousif, A. A.

AU - Osman, O. A.

PY - 2006/4

Y1 - 2006/4

N2 - 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.

AB - 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.

KW - Magnetization

KW - Mössbauer spectroscopy

KW - Spinel ferrites

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U2 - 10.1007/s10751-006-9446-7

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