Structural and Magnetic Properties of Barium-Strontium-Hexaferrite Material Ba0.6Sr0.4Fe10-xCoxMnTiO19 (x = 0.5; 1.0; and 1.5) as Microwave Absorbers

Yohanes Edi Gunanto (Faculty of Education, Universitas Pelita Harapan, Jalan M.H. Thamrin, Karawaci, Tangerang, 15811, Indonesia)
Maykel Manawan (Teknologi Daya Gerak, Universitas Pertahanan Indonesia, Jalan Anyar, Kompleks IPSC Sentul, Bogor 16810, Indonesia)
Maya Puspitasari Izaak (Faculty of Education, Universitas Pelita Harapan, Jalan M.H. Thamrin, Karawaci, Tangerang, 15811, Indonesia)
Henni Sitompul (Faculty of Education, Universitas Pelita Harapan, Jalan M.H. Thamrin, Karawaci, Tangerang, 15811, Indonesia)
Yunasfi Yunasfi (Research Center for Advanced Materials, Building 440, BRIN, Jalan Raya PUSPIPTEK, South Tangerang, 15314, Indonesia)
Wisnu Ari Adi (Research Center for Advanced Materials, Building 440, BRIN, Jalan Raya PUSPIPTEK, South Tangerang, 15314, Indonesia)

Journal of Mathematical and Fundamental Sciences
Vol. 55 No. 3 (2024)

We discuss the structure properties of Ba0.6Sr0.4Fe10-xCoxMnTiO19(BSFCMTO) for x = 0.5, 1.0, and 1.5 that influence its magnetic properties as a microwave absorber. A solid-state reaction method using high-energy milling was used to synthesize hexaferrite. There were no structural changes when the Co2+ ion was substituted for the Fe3+ ion; the structures of all samples were hexagonal and the space group was P63/mmc. The surface morphology had heterogeneous particles with a size of 300 to 600 nm. The magnetic properties tended to decrease with an increasing number of Co2+ ion substitutions. The reflection loss (RL) had a minimum value of -14.89 dB. This value was reached at a frequency of 10.96 GHz and had a bandwidth at 1.24 GHz with a sample thickness of 1 mm in the Ba0.6Sr0.4Fe9.9Co0.1MnTiO19 sample.