Abstract
In this study, Yttrium doped Copper ferrites (CuFe2-xYxO4;x=0.1,0.2,0.3,0.4,0.5) are synthesized through sol–gel auto combustion technique. X-ray diffraction and scanning electron microscope is employed to carry out structural and morphological study of as prepared samples. The XRD patterns show formation of stable tetragonal copper ferrite with and without doping. Tetragonal structure transformation is achieved with high sintering temperature. Vibrational modes were further examined through Raman and FTIR spectra and affirm formation of tetragonal structure with MO bonding. Electromagnetic response of the powdered samples was investigated in microwave region from 1 to 15 GHz. The decrease in real permittivity from 5 to 3 (F/m) as well as in real permeability from 2.5 to 1.75 (H/m) by increasing Y3+ content is observed. This trend directly correlates with degree of crystallinity. The low values of dielectric and magnetic loss tangent make them highly suitable for low loss applications.
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