Yohanes Edi Gunanto, Tesalonika Siregar, Ferry Budhi Susetyo, Jan Setiawan, Yunasfi, Mashadi, Suyanti, Yana Taryana, Wisnu Ari Adi
The criterion for a good microwave absorbing material is a single-phase material with high magnetic and dielectric characteristics. This work presents a comprehensive study on the effect of Ce substitution with various concentrations (x = 0.0, 0.01, 0.03, and 0.05) on the structural, magnetic, and microwave absorption properties of cobalt ferrite synthesized by the solid-state reaction method. X-ray diffraction analysis shows single phase of cobalt ferrite. The presence of Ce3+ dopant ions in the structure results in an increase in the unit cell volume and atomic density, but the crystallite size decreases with increasing Ce3+ dopant ion concentration. Scanning Electron Microscope observations show that the particle size appears to decrease with increasing concentration of Ce3+ dopant ions. Magnetic properties measured using a Vibrating Sample Magnetometer show a decrease in saturation magnetization from 161.57 emu/g (x = 0) to 92.46 emu/g (x = 0.05) and an increase in the coercivity field from 270.50 Oe(x = 0) to 387.00 Oe (x = 0.05). These structural changes and magnetic properties of CoCexFe2−xO4 can affect the characteristics of its microwave absorption properties. These microwave absorption properties were analyzed using a vector network analyzer in the X-band frequency range (812 GHz ) and showed that the substitution of Ce3+ ions significantly improved its microwave absorption performance. The attenuation increased from 94.35% (x = 0) to 99.28% (x = 0.05). The composition CoCe0.05Fe1.95O4 (x = 0.05) shows the best performance and makes it one of the potential candidates for high-performance microwave absorption materials. © The Author(’s).
Department of Teacher Professional Program (PPG), Faculty of Education, Universitas Pelita Harapan, Banten, Tangerang, 15118, Indonesia; Department of Physics, University of Indonesia, Jawa Barat, Depok, 16424, Indonesia; Department of Mechanical Engineering, Universitas Negeri Jakarta, Jakarta, 13220, Indonesia; Research Center for Energy Materials-National Research and Innovation Agency, KST B.J. Habibie, Serpong, Banten, Tangerang Selatan, 15314, Indonesia; Research Center for Minerals Technology-National Research and Innovation Agency, KST B.J. Habibie, Serpong, Banten, Tangerang Selatan, 15314, Indonesia; Research Center for, Telecommunication-National Research and Innovation Agency, KST Samaun Samadikun, Jawa Barat, Bandung, 40135, Indonesia; Department of Electrical Engineering, Pamulang University, Serpong, Banten, Tangerang Selatan, 15310, Indonesia
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