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A study of nanosized Ni substituted Co–Zn ferrite prepared by coprecipitation
- Source :
-
Journal of Magnetism & Magnetic Materials . Jun2007, Vol. 313 Issue 1, p198-203. 6p. - Publication Year :
- 2007
-
Abstract
- Abstract: Nanoparticles of Ni0.25Co0.25Zn0.5Fe2O4 with different particle sizes were synthesized by chemical coprecipitation technique. The prepared nanoparticles were characterized and studied by X-ray diffraction, room temperature 57Fe Mössbauer spectroscopy and DC magnetization. Increase in annealing temperature leads to inversion of cations from their normal configurations which results in an increase in the hyperfine fields at both tetrahedral A and octahedral B sites. The decrease in saturation magnetization values with an increase in annealing temperature can be attributed to the variation in proportions of superparamagnetic phase and also the redistribution of cations in these ferrite nanoparticles. Variation of coercivity with annealing temperatures can be explained in terms of the size effect. [Copyright &y& Elsevier]
- Subjects :
- *FERROMAGNETISM
*MAGNETISM
*MAGNETIZATION
*IONS
Subjects
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 313
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 24546912
- Full Text :
- https://doi.org/10.1016/j.jmmm.2006.12.026