Abstract
A series of Cd0·5Cu0.5-xMgxFe1.95La0·05O4 (x = 0.0, 0.125, 0.25, 0.375, 0.5) nano ferrites was synthesized via sol-gel auto combustion route. XRD analysis confirmed the development of spinel ferrites. Different structural parameters like lattice constant, tetrahedral and octahedral radii, oxygen ion parameter, tolerance factor, bond lengths, edge lengths and interionic distances were calculated from XRD data. It was observed that by increasing the Mg2+ concentration, lattice constant and crystallite size were increased. Energy band gap was measured using UV–vis spectroscopy and found in the range 1.79–2.36 eV. Dielectric properties of the prepared samples were also studied and it was found that dielectric constant and ac conductivity were decreased with increase in Mg2+ content. The study indicates that Cd0·5Cu0.5-xMgxFe1.95La0·05O4 nano ferrites have great potential to be utilized in high frequency devices as microwave absorbing material and in optoelectronic devices.
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