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Studies on the Structural, Morphological, Optical, and Magnetic Properties of α-Fe2O3 Nanostructures by a Simple One-Step Low Temperature Reflux Condensing Method
Adinaveen T, Judith Vijaya J,
Published in Springer Science and Business Media LLC
Volume: 27
Issue: 7
Pages: 1721 - 1727
Uniform hematite (α-Fe 2 O 3 ) nanoparticles have been successfully synthesized through a simple one-step low temperature reflux condensing method which requires no surfactants or templates. The crystallite size was calculated by using Debye-Sherrer formula, and it showed the range of 4-27 nm. The lattice parameters of the samples were measured by Rietveld analysis. The morphology of the products was studied by high resolution scanning electron microscopy (HR-SEM), and it was confirmed by high resolution transmission electron microscopy (HR-TEM). The HRTEM images exhibit the well defined lattice fringes of α-Fe 2 O 3 particles that confirm their high crystallinity. The formation of pure α-Fe 2 O 3 was further confirmed by using energy dispersive X-ray (EDX) analysis. The optical properties and the bandgap energy were measured by UV-Visible diffuse reflectance spectra (DRS) and photoluminescence (PL) spectra. The bandgap energy was measured by using Kubelka-Munk method, and the value was found to be 2.26 eV. Magnetic hysteresis (M-H) loops revealed that the as-prepared α-Fe 2 O 3 samples displayed ferromagnetic behavior. These results show that the prepared hematite possess good magnetic properties. © 2014 Springer Science+Business Media New York.
About the journal
JournalData powered by TypesetJournal of Superconductivity and Novel Magnetism
PublisherData powered by TypesetSpringer Science and Business Media LLC
Open AccessNo