Magneto-electric [CCI/CTO]@PANI composites: Structural, magnetic, morphological, and microwave absorption performance in 2-18 GHz frequency range

In this research, we reported a novel low-cost and efficient composite consisting of corroded carbonyl iron (CCI), calcium copper titanate (CTO) and polyaniline (PANI). The XRD analysis shows that the CTO sample exhibits a pure crystalline phase with an orthorhombic structure, while the amorphous peak of PANI appears at 25.4 degrees, corresponding to the (200) crystal plane. Morphological investigations have shown that the pitching corrosion has successfully altered the smooth surface of the carbonyl iron and that the CTO sample exhibits a near cubic shape. The formation of a continuous network of the [CCI/CTO]@PANI composite is also evident in the FESEM images. The electromagnetic (EM) wave absorption capability of the [CCI/CTO]@PANI composite was investigated at the 2-18 GHz range. The [CCI/CTO]@PANI composite sample with 30 wt% and thickness of 2 mm exhibits reflection loss (RL) of 22.0 dB at 14 GHz with a bandwidth of 6.5 GHz covering the range 11.5 18.0 dB which is more than the entire bandwidth of the Ku band. (c) 2021 Elsevier B.V. All rights reserved.

Automated summary

This research presents a novel low-cost and efficient composite material composed of corroded carbonyl iron, calcium copper titanate, and polyaniline, showing promising electromagnetic wave absorption capability.