Modeling the effective permeability of a material composed of MWCNTs encapsulated by transition metal particles

Abstract

Method of calculating the effective permeability of a particle encapsulated within multiwall carbon nanotubes (MWCNTs) is considered in the present work. The method is based on finding the potentials and then using these potentials to determine the resulting magnetic fields of a two-layer cylinder in an infinite medium. The effective magnetic permeability is calculated for the proposed model depending on its value and particle size. It is shown that the effective magnetic permeability starts to decrease more rapidly compared to that of the massive material as its size is reduced to the nanometer scale.