Gezahegn Gezmu - Academia.edu (original) (raw)
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City University of Hong Kong
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Nano sized Nio.8 Co0.2 Mnx Fe2-xO4 ferrites with varies compositions (x = 0.05 and 0.1) are succe... more Nano sized Nio.8 Co0.2 Mnx Fe2-xO4 ferrites with varies compositions (x = 0.05 and 0.1) are successfully synthesized by Sol–gel auto combustion method. The structure, morphology, chemical composition, electrical, dielectric and magnetic properties of these synthesized samples are investigated using x-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-Ray spectroscopy (EDS), Fourier transform infrared (FT-IR) spectroscopy, impedance analyzer (IR) as well as Electron spin resonance spectroscopy (ESR). The XRD analysis confirms the phase purity of the synthesized ferrites. It also reveals the formation of spinel structure for both prepared powder ferrites. The lattice parameter and the crystal size of are identified to be 8.538 Å and 58.23 nm, respectively for Ni0.8 Co0.2 Mn0.05 Fe1.95O4 ferrite material; and 8.561 Å and 59.14 nm, respectively for Ni0.8 Co0.2 Mn0.1 Fe1.9O4 ferrite material. The average crystallite size calculated using Debye– Scherer ...
Nano sized Nio.8 Co0.2 Mnx Fe2-xO4 ferrites with varies compositions (x = 0.05 and 0.1) are succe... more Nano sized Nio.8 Co0.2 Mnx Fe2-xO4 ferrites with varies compositions (x = 0.05 and 0.1) are successfully synthesized by Sol–gel auto combustion method. The structure, morphology, chemical composition, electrical, dielectric and magnetic properties of these synthesized samples are investigated using x-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-Ray spectroscopy (EDS), Fourier transform infrared (FT-IR) spectroscopy, impedance analyzer (IR) as well as Electron spin resonance spectroscopy (ESR). The XRD analysis confirms the phase purity of the synthesized ferrites. It also reveals the formation of spinel structure for both prepared powder ferrites. The lattice parameter and the crystal size of are identified to be 8.538 Å and 58.23 nm, respectively for Ni0.8 Co0.2 Mn0.05 Fe1.95O4 ferrite material; and 8.561 Å and 59.14 nm, respectively for Ni0.8 Co0.2 Mn0.1 Fe1.9O4 ferrite material. The average crystallite size calculated using Debye– Scherer ...