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In this work, the pristine and Tb-doped Cr2O3 were synthesized by solution combustion method at 500 °C followed by annealing at 700 °C. The samples were subjected to different characterization studies such as XRD, UV-Vis-NIR spectroscopy, XPS, and FT-IR analyses. The powder diffraction patterns revealed that the materials belong to rhombohedral crystal system. The average crystallites size of the nanocrystals was calculated by using Scherrers’ formula and by Williamson-Hall Plot. The optical absorption and band gap energy of the materials were estimated by using UV-Vis-NIR spectra. The elemental composition and chemical states of the compound were carried out by using X-ray photoelectron spectroscopy. The FT-IR spectroscopic studies were used to analyse the functional groups present in the materials.

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Structural Analysis of Pristine and Tb-doped Chromium Oxide Nanopowders Prepared by Solution Combustion

  • 会议论文

  • 发表日期：

    2026年

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  • K. Keerthana,
  • C. Esther Jeyanthi,
  • R. Siddheswaran

摘要

In this work, the pristine and Tb-doped Cr2O3 were synthesized by solution combustion method at 500 °C followed by annealing at 700 °C. The samples were subjected to different characterization studies such as XRD, UV-Vis-NIR spectroscopy, XPS, and FT-IR analyses. The powder diffraction patterns revealed that the materials belong to rhombohedral crystal system. The average crystallites size of the nanocrystals was calculated by using Scherrers’ formula and by Williamson-Hall Plot. The optical absorption and band gap energy of the materials were estimated by using UV-Vis-NIR spectra. The elemental composition and chemical states of the compound were carried out by using X-ray photoelectron spectroscopy. The FT-IR spectroscopic studies were used to analyse the functional groups present in the materials.