Abstract
Nanocrystalline Mn-ferrite and Ni doped Mn-ferrite (NixMn1-xFe2O4, with x = 0, 0.25, 0.5, 0.75) have been synthesized through co-precipitation technique. Electron microscopic study shows spherical morphology whereas, X-ray diffraction (XRD) analysis confirms the cubic lattice geometry of the prepared sample. From the XRD analysis, average particle size and intrinsic strain in the sample have been determined considering the Classical Williamson Hall (CWH) method. Again, dislocation density present in the sample has been determined from the Modified Williamson Hall (MWH) methods. MWH method further confirms increase in dislocation density with Ni doping. A significant blue shift and decrease in intensity has been observed in the PL peak with the increase in the dislocation density, which indicates a strong influence of the dislocation density on the PL spectra. Structural and PL spectral analysis establishes the fact that there is a correlation between dislocation density and emission properties of Ni doped Mn-ferrite nanocrystals.
Published Version
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