Magnetic and microwave absorption properties of BaFe12O19/BaTiO3 sintered composites system
Erfan Handoko1,3a), Mangasi Alion Marpaung1, Iwan Sugihartono1,3, Anggara Budi Susila1, Riser Fahdiran1,3, Setia Budi2,3, Ahmad Taufiq4, Zulkarnain Jalil5, Wahyu Widanarto6, Sib Krishna Ghoshal7, Umaisaroh Umaisaroh8, and Mudrik Alaydrus8

1Dept. of Physics, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia
2Dept. of Chemistry, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia
3Advanced Materials Research Group, Center of Excellence, Universitas Negeri Jakarta, Jalan Rawamangun Muka 13220, Jakarta, Indonesia
4Department of Physics, Universitas Negeri Malang, Jl. Semarang 5, 65145, Malang, Indonesia
5Dept. of Physics, Syiah Kuala University, Banda Aceh, Indonesia
6Department of Physics, FMIPA, Universitas Jenderal Soedirman, Jl. dr. Soeparno 61, Purwokerto, 53123, Indonesia
7Department of Physics and Laser Centre, AMORG, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Skudai, 81310, Malaysia
8Dept.of Electrical Engineering, Universitas Mercu Buana, Jalan Meruya Selatan No.1, Jakarta, Indonesia

Abstract

We have prepared a composite materials with ferromagnetic BaFe12O19 phase (BHF) and a ferroelectric BaTiO3 phase (BTO) by mechanical milling and sintering method. The X-ray diffraction analysis proved the formation of composite system of BHF and BTO. With the addition of BTO in the composite system, a magnetic loops have been resulted at room temperature with high magnetization saturation (Ms), magnetization remanent (Mr) and coercivity (Hc) values. The effect of the addition of BTO on the microwave absorption properties of the as-prepared composites were investigated by vector network analyzer (VNA). The results showed that the minimum reflection loss values of x=0.4 and x=0.5 are obtained as &#8722-15.8 dB at 9.25 GHz (with an optimum thickness (tm) of 1.8 mm) and &#8722-40.22 dB at 8.5 GHz (with tm of 1.75 mm), respectively.

Keywords: hexaferrite composite materials- magnetic properties- microwave absorption properties- reflection loss.

Topic: Magnetic materials