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Magnetic spinel ferrites in the nano range, having general formula MFe 2 O 4 (M=Cu, Zn, Ni and Co) were prepared using facile sol–gel methodology. The physicochemical properties of prepared ferrites characterized using FTIR, powder XRD and HRTEM stipulated formation of single phase cubic spinel structure. The band gap of all the ferrites was found in the range 1.26–2.08eV, consequently...
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