Structural characterization and magnetic properties of NiMg3x/2Cr0.9Fe1.1 − xO4

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...

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Published inHyperfine interactions Vol. 184; no. 1-3; pp. 105 - 110
Main Authors Gismelseed, Abbasher M., Widatallah, H., Al-Rawas, A. D., Al-Omari, I., Elzain, M., Yousif, A.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 2008
Subjects
Atomic
Condensed Matter Physics
Hadrons
Heavy Ions
Molecular
Nuclear Physics
Optical and Plasma Physics
Physics
Physics and Astronomy
Surfaces and Interfaces
Thin Films
Structural characterization
Magnesium
Mössbauer measurements
Magnetic properties
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Summary: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.
ISSN:0304-3843
1572-9540
DOI:10.1007/s10751-008-9773-y