Geodesic
Energy gap evaluation in microcrystalline m-HFO$_2$ powder
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 14 (2021) no. 2, pp. 224-229.

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In this paper optical properties of microcrystalline HfO$_2$ powder are investigated. X-ray diffraction and Raman spectroscopy were used to determine that the studied samples are in monoclinic phase. Based on the analysis of the diffuse reflectance spectra and applying Kubelka-Munk formalism we evaluated the indirect bandgap value $\mathrm{E}_g = 5.34 \pm 0.05$ eV. The calculated value is in agreement with independent data for HfO$_2$ thin films synthesized by various methods. The paper is based on the materials of the report presented at the first Russian scientific confererence with the participation of the international community "YENISEI PHOTONICS – 2020".
Keywords: hafnium dioxide, absorption edge.
Mots-clés : diffuse reflectance 
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     title = {Energy gap evaluation in microcrystalline {m-HFO}$_2$ powder},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
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     publisher = {mathdoc},
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Artem O. Shilov; Sergey S. Savchenko; Alexander S. Vokhmintsev; Andrey V. Chukin; Maksim S. Karabanalov; Maksim I. Vlasov; Ilya A. Weinstein. Energy gap evaluation in microcrystalline m-HFO$_2$ powder. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 14 (2021) no. 2, pp. 224-229. http://geodesic.mathdoc.fr/item/JSFU_2021_14_2_a9/

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