A three-dimensional, porous electrode composed of reticulated vitreous carbon (RVC) has been examined for the selective removal of metals by electrodeposition from single and multi-component solutions. A three-stage system was envisioned where each metal from a ternary mixture could be selectively removed in each stage. Single and multi-component solutions of copper, nickel, zinc and silver wer...

Nanosized Ni ferrite has been prepared by an ecofriendly green synthesis approach based on the self-combustion method. In this route, egg white as a fuel was employed with two different amounts (3 and 10 mL). The XRD results display formation of stoichiometric NiFe2O4-type inverse spinel structure lattice parameter located at 0.8284 nm 0.8322 nm. Additionally, nickel ferrites’ typical crystalli...

Ferrite metamaterials based on the negative permeability of ferromagnetic resonance in ferrites are of great interest. However, such metamaterials face a limitation that the ferromagnetic resonance can only take place while an external magnetic field applied. Here, we demonstrate a metamaterial based on permanent magnetic ferrite which exhibits not only negative refraction but also near zero re...

Cobalt-doped iron oxide nanoparticles were prepared by solution combustion technique. The structural and magnetic properties of the prepared samples were also investigated. The average crystallite size of cobalt ferrite (CoFe2O4) magnetic nanoparticle was calculated using Scherrer equation, and it was found to be 16±5 nm. The particle size was measured by transmission electron microscope. This ...

The purpose of this study is preparation polyaniline–lead ferrite, polyaniline–cobalt ferrite and polyaniline/nickel thin layers. electromagnetic pollution a serious problem in the world that can be solved by interference (EMI) shielding. EMI layers synthesized conductive layer composed magnetic particles. Crystallite size samples was studied (XRD) analyze via Debye–Scherrer Williamson–Hall equ...