Structural, dielectric and magnetic studies on polyaniline-decorated Ni0.5Cu0.5Fe2O4 nanoferrites for electromagnetic interference shielding applications

Recent advancements in the electromagnetic interference shielding performance of nanostructured materials and their nanocomposites: a review

“…374 The PANI-decorated Ni 0.5 Cu 0.5 Fe 2 O 4 composite exhibited the highest EMI SE of 66.56 dB, indicating its great potential in EMI shielding applications. 376 Polyaniline/Zn ferrite composites fabricated by a simple two-step method showed enhanced microwave absorption performance in the Ku-band as evident from the R L value below À10 dB and the minimum reection loss of À54.4 dB at 17.6 GHz (thickness: 1.4 mm). 377 The enhanced performance of PANI/Zn ferrite composites in the attenuation of microwaves could be due to impedance matching, the magnetic loss capability of PANI, dielectric loss and the interfacial polarization.…”

“…Studies were conducted on several nanomaterials, such as ferromagnetic element nanoalloys, metal oxides, ferrites and their polymers and ICP-based nanocomposites in EMI shielding applications. 276–405 The choice of magnetic materials-filled ICP nanocomposites in EMI shielding applications is mainly guided by the dielectric loss, magnetic loss and impedance matching of the component(s) of the material(s) under investigation. It provides a combination of magnetic nanoparticles and ICPs that account for its additionally reduced weight, cost, enhanced flexibility and corrosion resistance, tuneability conductivity and tailorable permeability.…”

One-Pot Preparation of Conducting Melamine/Polypyrrole/Magnetite Ferrosponge

“…The coprecipitation method using the mixture of iron(II) and iron(III) chlorides in ammonia solution is the most common. 7,21,24,30,31 Magnetite may be generated in particulate form or as a colloid stabilized by surfactants or water-soluble polymers that afford the control of particle size and colloidal stability of magnetite nanoparticles.…”

“…The routine preparation of a composite has proceeded as a rule in two steps: (1) In the standard approach, magnetite was prepared at first. The coprecipitation method using the mixture of iron­(II) and iron­(III) chlorides in ammonia solution is the most common. ,,,, Magnetite may be generated in particulate form or as a colloid stabilized by surfactants or water-soluble polymers that afford the control of particle size and colloidal stability of magnetite nanoparticles. (2) In the second step, the oxidation of pyrrole with iron­(III) chloride, , ammonium peroxydisulfate, , or by electropolymerization to polypyrrole took place in the presence of magnetite.…”