Synthesis and Characterization of Nickel Ferrite/Activated Carbon Nanocomposites as Radar Wave Absorbing Materials at X-Band FrequencyMuhammad Sulthan Ramdhana, Arif Hidayat, Markus Diantoro, Nurul Hidayat, Nur Hanifah, Dahlang Tahir and Ahmad TaufiqE3S Web Conf., 695 (2026) 01008DOI: https://doi.org/10.1051/e3sconf/202669501008