Abstract
In the present work, we have studied the magnetic environment of Fe atoms in Cd-doped cobalt ferrite using Mössbauer spectroscopy. A series of six samples with Co0.05CdxFe2.5-xO4 compositions (0.0≤×≤0.5) was prepared by sol-gel technique and then investigated by X-ray diffraction at room temperature and Mössbauer spectroscopy measurements in the transmission geometry at 78 K. Results of the XRD measurements indicate that all samples exhibit a single-phase cubic spinel structure. The analysis of the Mössbauer spectra shows a decrease in hyperfine magnetic field decreases at A and B site on increasing the doping of Cd ions. The appearance of the paramagnetic doublet at x = 0.5 clearly indicates that A-B super-exchange decreases due to dilution of the sub-lattice by Cd ions. The isomer shift values calculated from the fitting of the Mössbauer spectra clearly indicate that the resolved sextets in studied samples are due to Fe3+ ions only.
Original language | English |
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Pages (from-to) | 3604-3607 |
Number of pages | 4 |
Journal | Physica B: Condensed Matter |
Volume | 403 |
Issue number | 19-20 |
DOIs | |
Publication status | Published - Oct 1 2008 |
Keywords
- Ferrites
- Hyperfine interactions
- Mössbauer spectroscopy
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering