E. Handoko, T.B. Aulia, M.A. Marpaung, A. Taufiq, Y. Iriani, U. Umaisaroh, M. Alaydrus
To broaden the scope of a novel microwave absorbing material inside the x-band frequency range (8.2-12.4 GHz), Ca-substituted barium hexaferrite nano-crystalline were successfully synthesized prepared via standard ceramic route and mechanical milling method. The sintered BaFe12O19 (x=0) and Ba0.9Ca0.1Fe12O19 (x=1) at 1100°C for three hours were obtained the formation of magnetic phase and hysteresis behaviour and indicative of ferromagnetism. The analysis of x-ray diffraction was resulted to investigate the composition and magnetic phase. The dependence of complex permeability on frequency (μ = μ′ - jμ″) and the permittivity (ϵ = ϵ′ - jϵ″) were obtained. The reflection loss, RL-values were calculated and resulted multi-broadband with a thickness of 9.7 mm. It proved that Ca-substituted barium hexaferrite nano-crystalline material has a great potential for microwave absorption and electromagnetic applications. © Published under licence by IOP Publishing Ltd.
Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jalan Rawamangun Muka No. 1, Jakarta, 13220, Indonesia; Civil Engineering Department, Syiah Kuala University, Banda Aceh, 23111, Indonesia; Physics Department, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Physics Department, Faculty of Matematics and Natural Sciences, Sebelas Maret University, 57126, Indonesia; Electrical Engineering Department, Universitas Mercu Buana, Jalan Meruya Selatan No.1, Jakarta, 11650, Indonesia