Crystal and lattice structure of Cr doped Mn-Zn ferrites synthesized by coprecipitation method
Abstract
Impact of Cr2+ ion substitution on the crystal and lattice structure of Mn0.5Zn0.5-xCrx Fe2O4 (x = 0.0, 0.25 and 0.5) ferrites as synthesized by Co-precipitation method has been investigated by laboratory and synchrotron sources. Laboratory source x-ray diffraction confirms no structural transformation from cubic (Fd3m) structure due to Cr2+ ion substitutions at Zn site in Mn-Zn ferrites. The particle size increases with annealing temperature and slightly decrease in lattice parameter is observed with Cr doping. The synchrotron x-ray diffraction showed splitting of highest instance peak, which might be due to different annealing temperature. SRXRD reveals slightly reduced particle size (10 - 22 nm) as compare to the lab x-ray diffraction (13 - 27 nm). Evolution of Raman spectra in the measurement range of 100-800 cm-1 infers the five active phonon modes for all the synthesized samples. The Raman spectroscopy also confirms the cubic phase structure. The Raman mode of Mn0.5Zn0.5-xCrxFe2O4 (x = 0.0, 0.25 and 0.5) samples shows a blue shift, which is due to difference in atomic masses or ionic radii of Cr and Zn ions.
- Publication:
-
Dae Solid State Physics Symposium 2016
- Pub Date:
- May 2017
- DOI:
- 10.1063/1.4980568
- Bibcode:
- 2017AIPC.1832i0015Y