Abstract
Diffuse reflectance spectra of nanostructured monoclinic HfO2 powder are measured at room temperature. The Kubelka–Munk formalism is used to analyze features of the intrinsic absorption edge. The observed spectral dependences are found to be formed with the participation of allowed band-to-band transitions of different types. Direct and indirect bandgap widths are estimated to be 5.61 and 5.31 eV, respectively.
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The work was supported by the RF Ministry of Science and Higher Education, research project no. FEUZ-2020-0059.
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Translated by M. Shmatikov
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Shilov, A.O., Vokhmintsev, A.S., Henaish, A.M. et al. Formation of the Intrinsic Absorption Edge in Nanostructured Hafnium Dioxide Powder. Bull. Russ. Acad. Sci. Phys. 86, 771–774 (2022). https://doi.org/10.3103/S1062873822070279
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DOI: https://doi.org/10.3103/S1062873822070279