Conductive network structure of MWCNTs-incorporated cobalt-zinc ferrite nanocomposite for enhanced electromagnetic shielding applications
Source abstract
Abstract
Nanoparticles of pure Co0.5Zn0.5Fe2O4 and nano-composites of multi-walled carbon nanotubes (MWCNTs)–incorporated Co0.5Zn0.5Fe2O4 (CZFO) were successfully synthesized by adopting a facile co-precipitation technique. The structural and morphological studies were carried out using various advanced equipment. XRD confirmed the crystalline phase of the synthesized CZFO and hybrid CZFO/MWCNT samples. Further, FESEM and TEM confirmed that the porous and snowflake-like structured CZFO is strongly attached to MWCNTs with a varying size range of 6–12 nm. UV–Visible spectroscopy illustrated a small change in the bandgap from 1.9 to 2.1 eV with the increasing MWCNTs concentration, i.e., from 0 to 3 wt.% in the samples. The effect of the addition of MWCNTs over CZFO was investigated to determine the shielding effectiveness of the prepared material in the X-band frequency range. The shielding effectiveness for the incident EM radiations was found to lie in the range of 34.7 to 36.7 dB throughout the entire X-band for 3 wt.% MWCNTs doped CZFO nanocomposite. While the shielding effectiveness decreases with the decrease in MWCNTs concentration in the CZFO ferrite magnetic nanoparticles. Also, the skin depth for 3 wt.% CZFO/MWCNTs came out to 0.58 mm which is lesser than CZFO (i.e., 0.74 mm). The produced nanocomposites meet the global need for a lightweight, flexible, cost-effective, and thinner EMI shielding material with an EMI shielding of over 20 dB, which is the minimum criterion for EMI shielding applications in electronic devices. Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advancements in Battery Materials · Magnetic Properties and Synthesis of Ferrites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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