Erfan Handoko, Naufal Nafis, Navida Rizkina, Mangasi Alion Marpaung, Zulkarnain Jalil, Teuku Budi Aulia, Yofentina Iriani, Umaisaroh Umaisaroh, Prawiro Harjono, Eko Sulistio Hanan, A.H. Gursida, Mudrik Alaydrus
This study aims to evaluate the effectiveness of microwave absorption in BaFe12O19/Activated Carbon-based composite materials with the addition of coconut fiber. The composites were synthesized using the mechanical milling method with variations in filler composition (x = 0, 5, 10, 15) and combinations of coconut fiber + BaFe12O19/Activated Carbon (x = 100, 90, 80, 70, 60). Characterization was carried out using a Permagraph to analyze magnetic properties and a Vector Network Analyzer (VNA) to measure microwave absorption in the X-band frequency range (7-13 GHz). The results showed that the addition of coconut fiber improved impedance matching and absorption capability. The best RL value of -15.52 dB at 11.45 GHz with 97.20% absorption efficiency was found in the pure BaFe12O19 filler (x = 0). The most optimal composite variation was at x = 60 with a minimum RL value of -31.81 dB at 12.61 GHz and maximum absorption efficiency of 99.93%. These findings indicate that the combination of coconut fiber with BaFe12O19/Activated Carbon effectively enhances material performance as a Radar Absorbing Material (RAM). © Published under licence by IOP Publishing Ltd.
Department of Physics, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia; Department of Physics, Syiah Kuala University, Banda Aceh, 23111, Indonesia; Department of Civil Engineering, Syiah Kuala University, Banda Aceh, 23111, Indonesia; Department of Physics, Faculty of Matematics and Natural Sciences, Sebelas Maret University, 57126, Indonesia; Department of Electrical Engineering, Universitas Mercu Buana, Jalan Meruya Selatan No.1, Jakarta, 11650, Indonesia; Department of Electrical Engineering, Universitas Bung Karno, Jalan Pegangsaan Timur No.17A, Jakarta, 10310, Indonesia; Department of Physics, Universitas Halim Sanusi, Jalan Taman Siswa No.4, Bandung, 40116, Indonesia; Chemical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
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