Turkish Journal of Physics
Abstract
Nanosized zinc ferrite particles, prepared by spray pyrolysis method, were investigated by X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy, Fe^{57} Mossbauer spectroscopy, and vibrating sample magnetometer. The cubic crystalline phases were identified in all samples. The lattice parameter (a = 8.446 Å) and the average particle size of all the samples were determined. The particle sizes increased as the annealing temperature increased from 250 °C to 550 °C. The variation in structural parameters and particle size estimated from X-ray diffraction patterns of heat-treated samples suggested that the synthesized sample was in a `metastable' state or a compositionally constrained state. The Mossbauer spectra of the annealed samples showed a single doublet, thereby indicating the presence of superparamagnetism. Magnetic studies using vibrating sample magnetometer also confirm the superparamagnetic nature of the material.
DOI
10.3906/fiz-1401-3
Keywords
Nano zinc ferrites, spray pyrolysis, superparamagnetism
First Page
228
Last Page
237
Recommended Citation
KURIAN, JESSYAMMA; JOHN, SUBIN; and MATHEW, JACOB
(2014)
"Annealing effect on zinc nanoferrite particles synthesized by spray pyrolysis of polymer precursor,"
Turkish Journal of Physics: Vol. 38:
No.
2, Article 9.
https://doi.org/10.3906/fiz-1401-3
Available at:
https://journals.tubitak.gov.tr/physics/vol38/iss2/9
