Preparation and Characterization of Fe/SiO₂ Composite

DOI

10.2991/978-2-38476-402-0_13How to use a DOI?

Keywords

Fe/SiO2 composite; ball milling; structural properties; magnetic properties; functional groups

Abstract

Fe/SiO₂ soft magnetic composites have gained considerable attention in the field of materials science due to their unique magnetic properties, high electrical resistivity, and thermal stability. These materials are particularly useful in various applications, including transformers, inductors, and electromagnetic devices. Silica is an oxidizing compound that is widely used in industry. Silica can be obtained from various sources including agricultural waste, in this case bamboo leaves. This research aims to prepare composite consisting of magnetic materials Fe and silica by ball milling technique. Silica is extracted from bamboo leaf gathering from local farm, then burning in electrical furnace 600 ℃ for 4h. Bamboo leaf ash then was leached using hydrochloric acid (HCl) extraction of 5M, while Fe powder is purchased from chemical stores. The silica and Fe powder grind in ball milling reactor of 240 rpm for 24h. The Fe mass fraction (x) varied from 0.1 to 0.9. The samples were characterized using X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS) and vibrating sample magnetometer (VSM) techniques, I-V characteristic for electrical resistivity. Experimental result confirmed that Fe-SiO₂ composite prepared by ball milling show particle crystalline Fe dispersed in matrix amorphous SiO₂, however the shape and size of Fe particle are irregular. XRD result shows the appearance of silica at 2θ = 21° the type quartz and α-Fe around 2θ = 44.68° as well as FTIR spectra demonstrate the presence Si-O-Si bond at wavelength of 1099 cm⁻¹ and Fe-O bond at wavelength of 470 cm⁻¹. Electrical resistivity reveals the dcreaase with increasing Fe fraction and The presence percolation around x = 0.7. VSM measurement present superparamagnetic behavior with magnetic saturation (M_s) is proportional to the increasing mass fraction of Fe, from 28 emu/g for x = 0.1 to 170 emu/g for x = 0.9.

Copyright

© 2025 The Author(s)

Open Access

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TY  - CONF
AU  - Muhammad Anas
AU  - I Nyoman Sudiana
AU  - Mardiana Napirah
AU  - Putri Oktavian
AU  - Eka Rezky Amelia
AU  - Sukinah Silondai
PY  - 2025
DA  - 2025/05/14
TI  - Preparation and Characterization of Fe/SiO₂ Composite
BT  - Proceedings of The 3rd International Conference on Mathematics and Science Education (ICMSE-2024)
PB  - Atlantis Press
SP  - 124
EP  - 134
SN  - 2352-5398
UR  - https://doi.org/10.2991/978-2-38476-402-0_13
DO  - 10.2991/978-2-38476-402-0_13
ID  - Anas2025
ER  -