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- Title
Annealing Induced Enhancement in Magnetic Properties of CoZnFeO Nanoparticles.
- Authors
Iqbal, Javed; Rajpoot, Mubasher; Jan, Tariq; Ahmad, Ishaq
- Abstract
In this paper, cobalt zinc ferrite (CoZnFeO) nanoparticles (NPs) have been prepared using chemical co-precipitation method. In order to investigate the annealing induced effects on their various physical properties, the prepared samples have been annealed at 500 °C, 650 °C and 1000 °C and then compared with as-prepared sample. X-ray diffraction (XRD) patterns of as-prepared and annealed samples at various temperatures exhibit single phase spinel structure. Enhancement in crystallinity and crystallite size is observed with the increase in annealing temperature. The annealing has also greatly influence the morphology and grain size of prepared NPs. The CoZnFeO NPs have shown remarkable enhancement in magnetic moment with increase in annealing temperature. The bandgap energies of CoZnFeO NPs have been measured via UV Spectrometer and observed to decrease with annealing temperature. FTIR spectra of the samples reveal the presence of both high frequency and low-frequency bands due to tetrahedral and octahedral sites, which corroborate well with the XRD results. The observed characteristics of cobalt zinc ferrite NPs as a function of annealing temperature are the rising contender for many data storage and nanodevice applications. Finally, the genotoxicity of prepared nanoferrites has been checked via comet assay.
- Subjects
MAGNETIC properties of transition metal compounds; COBALT compounds; MAGNETIC properties of nanoparticles; ANNEALING of metals; BAND gaps; X-ray diffraction; ZINC ferrites
- Publication
Journal of Superconductivity & Novel Magnetism, 2014, Vol 27, Issue 7, p1743
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-014-2505-4