Wida Puteri Agista, ST. Ulfawanti Intan Subadra, Ahmad Taufiq, Arif Hidayat, Erfan Handoko, Mudrik Alaydrus, Tahta Amrillah, Itthipon Jeerapan
Iron oxide/carbon-based nanocomposites are known as an ideal combination of magnetic-conductive materials that were recently developed in radar absorption application; one example is the Fe3O4/multiwalled carbon nanotubes (MWCNTs). In this study, we try to boost their radar absorption ability by Mn-ion doping. Mn is an appropriate Fe substitute that is predicted to alter the magnetic properties and enhance the conductivity, which are crucial to developing their radar absorption properties. Diethylamine (DEA) is also used as a capping agent to improve the size and shape of the nanocomposite. In this study, a MnxFe3−xO4-DEA/MWCNT nanocomposite is successfully prepared by the coprecipitation method using a variation of x = 0, 0.25, 0.5, 0.75, and 1. We found that the sample's magnetic saturation (Ms) decreases, while the reflection loss (RL) increases with increasing the molar fraction of Mn. The enhancement of the radar wave absorption in the sample is dominated by dielectric losses due to the increase of electrical conductivity and interfacial polarization with the addition of Mn in the nanocomposites. We believe that our finding could shed light on the role of doping elements to develop the radar absorption properties, and further pave the way for the real implementation of iron oxides/graphene-based nanocomposite as radar-absorbing materials (RAMs). © 2023 The Royal Society of Chemistry.
Department of Physics, Faculty of Mathematics and Natural Science, State University of Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jl. Rawamangun Muka 1, Jakarta, 13220, Indonesia; Department of Electrical Engineering, Universitas Mercu Buana, Jl. Meruya Selatan 1, Jakarta, 11650, Indonesia; Nanotechnology Engineering, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Jl. Ir. Sukarno 1, Surabaya, 60115, Indonesia; Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla, Hat Yai, 90110, Thailand
