Ahmad Taufiq, Rosy Eko Saputro, Sunaryono, Yuanita Amalia Hariyanto, Nurul Hidayat, Arif Hidayat, Nandang Mufti, Hendra Susanto, Mujamilah
This work was aimed to identify the functional group and magnetic properties of the Fe3O4 ferrofluids coated by oleic acid regarding different compositions of olive oil as a dispersing agent. The results of the x-ray diffraction (XRD) data presented that the phase of the samples was a Fe3O4 phase, which was identified based on the diffraction peaks with highest peak at 35.6° with the particle size of 8.8 nm. The results of the Fourier transform infrared (FTIR) characterization on the ferrofluids showed those functional groups representing the existence of magnetic and dispersing agent particles. Based on the data analysis of the magnetization data, the composition of the dispersing agent influenced the saturation magnetization with the highest value of approximately 18 emu/gram. Therefore, the prepared ferrofluids in this work open a potency to be applied in various fields, such as for an antibacterial agent. © Published under licence by IOP Publishing Ltd.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Centre for Science and Technology of Advanced Materials, National Nuclear Energy Agency of Indonesia, Tangerang, 15314, Indonesia
