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This study investigates the chemical synthesis of trivalent iron cation Fe3+ substituted α-phase alumina, α-Al2O3:Fe3+. α-Al2O3:Fe3+ samples were synthesized from α-Al2O3 and α-Fe2O3 powders within the composition range of Al2-xFexO3 (x=0.02-0.04). X-ray diffraction (XRD) analysis confirmed that the synthesized samples were in α-phase crystalline structure. UV–Vis absorption spectroscopy revealed that the predominant oxidation state of iron cations substituting Al3+ sites in α-Al2O3 is Fe3+. Fourier-transform infrared (FTIR) and Raman scattering spectroscopy were employed to examine the lattice dynamics of the α-Al2O3:Fe3+ samples.

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• In Copyright
  

Keyword: Infrared absorption measurement, Raman scattering measurement, Lattice dynamics, Chemical synthesis of α-Al2O3:Fe3+

Date published: 2025-08-23

Publisher: Elsevier BV

Journal:

• MATERIALS LETTERS (ISSN: 0167577X) vol. 403 139311

Funding:

Manuscript type: Author's version (Submitted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5686

First published URL: https://doi.org/10.1016/j.matlet.2025.139311

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Updated at: 2025-09-01 12:30:23 +0900

Published on MDR: 2025-09-01 12:18:10 +0900