Improvement of multiple attenuation characteristics of two-dimensional lamellar ferrocobalt@carbon nanocomposites as excellent electromagnetic wave absorbers

Abstract

The lightweight carbon skeleton compounded with magnetic nanoparticles as excellent electromagnetic wave absorbers have attracted much attention considering their strong dielectric loss and magnetic loss, as well as the optimized...

Facile synthesis of a rod-like Ni/TiO2/C nanocomposite for enhanced electromagnetic wave absorption

“…By increasing the electromagnetic wave absorption value through various forms of interfacial polarization, Ni, TiO 2 , and C not only produce enough lattice defects to induce dipole polarization, but also cause uneven spatial charge distribution, thus enhancing the interfacial polarization and improving the electromagnetic wave energy during transmission. 46 Third, natural resonance and eddy currents generated by the magnetoelectricity achieve magnetic losses, while the conductive network formed by the connection of Ni particles maintains the conduction losses. 47,48 Therefore, the magnetic and conduction losses of Ni nanoparticles contribute to the attenuation of electromagnetic waves.…”

Dendrimer-assisted defect and morphology regulation for improving optical, hyperthermia, and microwave-absorbing features

“…It is well known that the intrinsic features of absorbing materials, such as permeability, permittivity, and impedance matching, are the pioneer factors imparting microwave characteristics as given by the transmission line theory. [16][17][18][19][20] Natural and exchange resonance as well as eddy current loss define permeability, and polarization and electric conductivity generate the permittivity of an absorber in the microwave region. Noticeably, magnetic and dielectric parameters play pivotal roles in tuning impedance matching.…”