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Impact of dysprosium (Dy3+) doping on size, optical and dielectric properties of titanium dioxide nanoparticles grown by low temperature hydrothermal method

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Abstract

In the present work, hydrothermal method was followed to synthesize Undoped and Dy3+ doped TiO2 nanoparticles. The as-prepared pure and doped nanoparticles were investigated by the characterization techniques, as such X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Energy dispersive X-ray analysis (EDAX), Ultraviolet–Visible (UV–Vis) spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR), and Dielectric Spectroscopy. The crystallography and grain size have been studied using XRD and TEM Analysis. X-ray diffraction and energy dispersive X-ray spectroscopy results showed that the as prepared nanoparticles were without any impurity. With the doping of Dysprosium ion, the grain size increases. UV–Visible Spectra reveals the optical properties and the optical band gap calculated using Kubelka- Munk plot was found to be 3.45 eV for pure TiO2 and decreases to 3.39 eV due to doping. The results indicate that the size of the nanoparticles increases with decreasing bandgap when dopant added. The development of the anatase phase TiO2 is affirmed by XRD and FT-IR. The Dielectric properties and A.C Conductivity measurements along with frequency were done for synthesized samples.

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Authors and Affiliations

  1. Department of Physics, Loyola College, Chennai, 600 034, India

    S. Ezhil Arasi, M. Victor Antony Raj & J. Madhavan

  2. Loyola Institute of Frontier Energy (LIFE), Loyola College, Chennai, 600 034, India

    M. Victor Antony Raj

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  1. S. Ezhil Arasi
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  2. M. Victor Antony Raj
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  3. J. Madhavan
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Correspondence to M. Victor Antony Raj.

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Arasi, S.E., Raj, M.V.A. & Madhavan, J. Impact of dysprosium (Dy3+) doping on size, optical and dielectric properties of titanium dioxide nanoparticles grown by low temperature hydrothermal method. J Mater Sci: Mater Electron 29, 3170–3177 (2018). https://doi.org/10.1007/s10854-017-8250-2

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  • DOI: https://doi.org/10.1007/s10854-017-8250-2

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