Study of Cation Distribution of Mn-Zn Ferrites | ||
| Egyptian Journal of Solids | ||
| Article 9, Volume 29, Issue 2, 2006, Pages 329-340 PDF (241.27 K) | ||
| DOI: 10.21608/ejs.2006.149282 | ||
| Abstract | ||
| A series of polycrystalline ferrite samples with the composition MnxZn1-xFe2O4 (x=0.0, 0.25, 0.5, 0.75, and 1.0) were prepared by the standard ceramic method. X-ray diffraction pattern confirm the existence of single phase of cubic spinel crystal structure with the lattice parameter ranges from 8.419Å (for ZnFe2O4) to 8.478 Å (for MnFe2O4). This behavior was attributed to the ionic radii. The Mössbauer spectra were analyzed into two subspectra, one for the tetrahedral A–site and the other for the octahedral B–site. The Mössbauer parameters were determined and discussed for the studied system. Zn–ferrite shows a central paramagnetic phase C while Mn–ferrite shows six line Zeeman pattern. The cation distribution was estimated from the analysis of the Mössbauer spectra as well as the x–ray diffraction patterns. The results showed that Zn ions occupy mainly A-site while Mn and Fe ions are distributed between A- and B- sites. | ||
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