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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

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Abstract

Uniform hematite (α-Fe2O3) 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-Fe2O3 particles that confirm their high crystallinity. The formation of pure α-Fe2O3 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-Fe2O3 samples displayed ferromagnetic behavior. These results show that the prepared hematite possess good magnetic properties.

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Authors and Affiliations

  1. Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai, 600 034, India

    T. Adinaveen & J. Judith Vijaya

  2. Materials Division, School of Advanced Sciences, Vellore Institute of Technology University, Chennai Campus, Chennai, 600 127, India

    L. John Kennedy

Authors
  1. T. Adinaveen
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  2. J. Judith Vijaya
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  3. L. John Kennedy
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Correspondence to J. Judith Vijaya.

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Adinaveen, T., Judith Vijaya, J. & John Kennedy, L. Studies on the Structural, Morphological, Optical, and Magnetic Properties of α-Fe2O3 Nanostructures by a Simple One-Step Low Temperature Reflux Condensing Method. J Supercond Nov Magn 27, 1721–1727 (2014). https://doi.org/10.1007/s10948-014-2497-0

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  • DOI: https://doi.org/10.1007/s10948-014-2497-0

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