R. Utami, M.H. Habani, Delianti, A. Hidayat, A. Taufiq
Understanding crystal size is crucial to optimize the desired properties, such as photo-Fenton activity, which is superior with nano-sized materials compared to bulk materials. This study aimed to investigate the crystallographic properties of Fe3O4 and Fe3O4 substituted with Mn2+ ions (Mn0.25Fe2.75O4). Fe3O4 and Mn0.25Fe2.75O4 were synthesized from natural iron sand, which is abundant in Indonesia, where the synthesis followed the coprecipitation route. X-Ray Diffraction (XRD) characterization was performed to confirm their crystal structure and size. The crystal size was further analyzed by Scherrer, Monshi-Scherrer, Williamson-Hall (all of uniform deformation model, uniform stress deformation model, and uniform deformation energy density model), Size-Strain Plot, and Halder-Wagner models. XRD analysis revealed that the crystal structures of Fe3O4 and Mn0.25Fe2.75O4 are inverse spinel. The Mn0.25Fe2.75O4 crystal shows a larger crystal size than Fe3O4. All models show accurate results except Halder-Wagner, which makes a significant difference. © Published under licence by IOP Publishing Ltd.
Department of Physics, Universitas Bangka Belitung, Bangka, 33172, Indonesia; Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Faculty of Computer Science and Information Technology, Gunadarma University, Indonesia
