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 |
|---|---|
| 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 |
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Keywords
- Ferrites
- Hyperfine interactions
- Mössbauer spectroscopy
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
Mössbauer studies of Co0.5CdxFe 2.5-xO4 (0.0≤×≤0.5) ferrite. / Kumar, Shalendra; Farea, A. M M; Batoo, Khalid Mujasam; Lee, Chan Gyu; Koo, B. H.; Yousef, Ali; Alimuddin.
In: Physica B: Condensed Matter, Vol. 403, No. 19-20, 01.10.2008, p. 3604-3607.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mössbauer studies of Co0.5CdxFe 2.5-xO4 (0.0≤×≤0.5) ferrite
AU - Kumar, Shalendra
AU - Farea, A. M M
AU - Batoo, Khalid Mujasam
AU - Lee, Chan Gyu
AU - Koo, B. H.
AU - Yousef, Ali
AU - Alimuddin,
PY - 2008/10/1
Y1 - 2008/10/1
N2 - 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.
AB - 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.
KW - Ferrites
KW - Hyperfine interactions
KW - Mössbauer spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=55349145216&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=55349145216&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2008.06.001
DO - 10.1016/j.physb.2008.06.001
M3 - Article
VL - 403
SP - 3604
EP - 3607
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 19-20
ER -