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IJPAP Vol.45 [2007] >
IJPAP Vol.45(10) [October 2007] >
| Title: | Mössbauer study of nanoparticles of Co₀․₄Zn₀․₆Fe₂O₄ |
| Authors: | Dolia, S N
Prasad, Arun S
Dhawan, M S
Chander, Subhash
Sharma, M P |
| Keywords: | Nano-particles
Spinel ferrite
Mössbauer spectra |
| Issue Date: | Oct-2007 |
| Publisher: | CSIR |
| IPC Code: | G01J3/28, H01F41/30 |
| Abstract: | Two samples of nanoparticles of Co₀․₄Zn₀․₆Fe₂O₄ with the average particle sizes of 6 nm and 15 nm have been synthesized by chemical co-precipitation method and followed by heat treatment at 600ºC. The cubic spinel structure in single phase has been confirmed by X-ray diffraction. The lattice parameters are 8.39 Å and 8.41 Å, respectively. ⁵⁷Fe Mössbauer spectra were recorded at 300 K and 80 K. Both samples are resolved in two patterns corresponding to two crystalline sites. The Mössbauer spectra and hysteresis curves for the two samples recorded at 300 K show superparamagnetic behaviour. The analysis of Mössbauer spectra reveal that the intensity of Fe³⁺ ions on both sites is nearly the same which indicate that the Zn²⁺ occupies the octahedral site in these samples. |
| Page(s): | 826-829 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.45(10) [October 2007]
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