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All Journal Jurnal Fisika FLUX
Agus Riyanto
Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) Universitas Lampung Jl. Prof. Soematri Brodjonegoro No. 1 Gedungmeneng Bandarlampung 35145
Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics

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Preparasi dan Karakteristik Fisis Nanopartikel Magnetit (Fe3O4) Agus Riyanto
Jurnal Fisika FLUX Vol 16, No 1 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1462.243 KB) | DOI: 10.20527/flux.v16i1.5524

Abstract

This study aims to identify the effect of preparation temperature on microstructure and magnetic properties of magnetite nanoparticles prepared from FeSO4.7H2O and FeCl3.6H2O by using co-presipitation method without organic solvent and surfactant. Precursors were prepared at 30 oC, 60 oC, and 90 oC under atmospheric pressure. Microstructure and diameter distribution of magnetite nanoparticles were analyzed by using XRD, FTIR, TEM, and imageJ software, while the magnetic properties were analized using VSM. The identification result show that the magnetite phase was formed on all samples with polycrystalline structure. The increasing of preparation temperature was followed by increase in diameter of grains and oxidation rate of magnetite phase into maghemit ( -Fe2O3). The superparamagnetic properties almost can be observed especially in sample prepared at 30 oC, where magnitude of remanent and coersivity is 3.39 emu/g and 23.93 Oe, respectively. The magnitude of remanent and coersivity increases as preparation temperature increases and superparamagnetic effect decrease.KEYWORD : 
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