Synthesis and Structural Properties of Bismuth Doped Cobalt Nanoferrites Prepared by Sol-Gel Combustion MethodReportar como inadecuado




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A series of Bismuth doped Cobalt nanoferrites of chemical composition CoBixFe2-xO4 where x = 0.00, 0.05, 0.10, 0.15, 0.20 & 0.25 were prepared by sol-gel combustion method and calcinated at 600℃. The structural and morphological studies were carried out by using X-ray diffraction XRD, Scanning Electron Microscope SEM, Transmission Electron Microscopy TEM, Energy Dispersive Spectroscopy EDS and Fourier Transform Infrared FT-IR spectra showing the single phase spinal structure. The X-ray diffraction XRD analysis confirmed a single phase fcc crystal. The crystallite size of all the compositions was calculated using Debye-Scherrer equation and found in the range of 17 to 26 nm. The lattice parameters were found to be decreased as Bi3+ ion doping increases. The surface morphology was studied by Scanning Electron Microscope SEM and particle size was confirmed by Transmission Electron Microscopy TEM. The EDS plots revealed existence of no extra peaks other than constituents of the taken up composition. The Fourier Transform Infrared FT-IR studies were made in the frequency range 350 - 900 cm-1 and observed two strong absorption peaks. The frequency band is found at 596 cm-1 where as the lower frequency band at 393 cm-1. It is clearly noticed that the two prominent absorption bands were slightly shifted towards higher frequency side with the increase of Bi3+ ion concentration.

KEYWORDS

Bi-Co Nanoferrites, Sol-Gel Combustion Method, XRD, SEM, EDS, TEM and FTIR

Cite this paper

Kumar, N. and Kumar, K. 2015 Synthesis and Structural Properties of Bismuth Doped Cobalt Nanoferrites Prepared by Sol-Gel Combustion Method. World Journal of Nano Science and Engineering, 5, 140-151. doi: 10.4236-wjnse.2015.54016.





Autor: Naraavula Suresh Kumar1, Katrapally Vijaya Kumar2*

Fuente: http://www.scirp.org/



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