Microwave absorption properties of single and double-layer absorbers based on barium hexaferrite and silica
Mangasi. Alion Marpaung1, Erfan Handoko1,*, Zulkarnain Jalil2, and Mudrik Alaydrus3
1.Dept of Physics. Universitas Negeri Jakarta. Jalan Rawamangun Muka 13220. Jakarta Indonesia
2.Dept. of Physics. Syiah Kuala University. Banda Aceh. Indonesia
3Dept.of Electrical Engineering. Universitas Mercu Buana. Jalan Meruya Selatan No.1 Jakarta. Indonesia
Abstract
In order to study a new microwave absorbing properties of single and double layer barium hexaferrite and silika have been investigated in X-band (8.2–12.4 GHz) frequencies. Barium hexaferrite BaFe12O19 was synthesized by ceramic method and Silica SiO2 was prepared from beach sand. Barium hexaferrite and silica with a total thickness of 2 mm, 4 mm, 6 mm, 8 mm and 10 mm, were characterized at room temperature using vector network analyzer (VNA) Rohde‐Schwarz ZVA 67. Reflection loss (RL) of single and double-layer absorbers of barium hexaferrite and silica were calculated using the transmit line theory. The double-layer absorbers exhibit better absorption performances with a stronger microwave absorption and a wider effective absorption bandwidth in comparison with the single-layer absorbers at the same thickness
Keywords: Single and double layer, BaFe12O19, SiO2, reflection loss.
Topic: Physics