Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness |
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| Authors: | Jen-Bin Shi Jhe-Wei Guo Chien Wu Chih-Jung Chen Ya-Ting Lin |
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| Affiliation: | a Department of Electronic Engineering, Feng-Chia University, Taichung 40724, Taiwan
b Department of Chemical Engineering, Feng-Chia University, Taichung 40724, Taiwan |
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| Abstract: | Elliptical-type α-Fe2O3 nanoparticles with/without silica shell have been prepared. The core particles were coated with uniform continuous layers of silica of two different thicknesses by hydrolysis of TEOS. The obtained HCP structure elliptical α-Fe2O3 nanoparticles with ∼ 240 nm length and 100 nm width is polycrystalline in nature. The thicknesses of SiO2 shell coated on α-Fe2O3 are about 55 and 30 nm, respectively. The optical and magnetic properties of these nanoparticles have been investigated. |
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| Keywords: | Elliptical α-Fe2O3 nanoparticles Optical properties Magnetic materials Nanomaterials |
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