Preparation and Characterization of Nano-magnetic Ni0.5Mg0.5Fe2O4 System for Biological Applications

作者：Deraz N M^*; Abd Elkader Omar H

来源：Journal of Pure and Applied Microbiology, 2013, 7: 333-339.

• XRD
• SEM
• EDX
• Ni0.5Mg0.5Fe2O4
• Crystallite size

New route was used for preparation of mixed nickel-magnesium ferrite (Ni0.5Mg0.5Fe2O4). Various techniques were used to characterize the as prepared product such as X-ray diffraction (XRD), infrared (IR) spectroscopy, scanning electron micrographs (SEM), energy dispersive X-ray (EDX) and a vibrating sample magnetometer (VSM). The crystallite size, lattice constant, unit cell volume, density of Ni0.5Mg0.5Fe2O4 phase has been determined. The investigated method led to prepare single phase of spinel nickel-magnesium ferrite depending upon the XRD and IR results. SEM and EDX techniques showed the as synthesized materials were spongy, homogeneous and fragile. The concentrations of O, Ni, Fe and Mg species involved in Ni0.5Mg0.5Fe2O4 sample were investigated from the uppermost surface to the bulk layers. The saturation magnetization (Ms), remanence magnetization (Mr) and coercivity (Hc) of the as synthesized composite were 34 emu/g, 12 emu/g and 29 Oe, respectively.

• 出版日期2013-11