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Title: Atomic and electronic structures of lutetium oxide Lu{sub 2}O{sub 3}

The chemical composition, electronic structure, structure, and physical properties a lutetium oxide Lu{sub 2}O{sub 3} film are studied by X-ray photoelectron spectroscopy, ellipsometry, and X-ray absorption spectroscopy. The short-range order in Lu{sub 2}O{sub 3} is found to correspond to its cubic modification. The binding energies of the 1s and 2p levels of oxygen and the 4d{sub 5/2} and 4f{sub 7/2} levels of lutetium are 529.2, 5.0 and 7.4, 195.9 eV, respectively. The energy gap determined from the electron energy loss spectrum of the film is 5.9 eV. The electron energy loss spectra have two peaks at 17.4 and 22.0 eV, which can be attributed to the excitation of bulk plasma oscillations. The dispersion of the refractive index is measured by spectral ellipsometry. The refractive index is shown to increase from 1.82 at 1.5 eV to 2.18 at 5.0 eV, and the high-frequency permittivity of Lu{sub 2}O{sub 3} is 3.31.
Authors:
 [1] ; ;  [2] ;  [3] ; ;  [3]
  1. Russian Academy of Sciences, Boreskov Institute of Catalysis, Siberian Branch (Russian Federation)
  2. Russian Academy of Sciences, Institute of Inorganic Chemistry, Siberian Branch (Russian Federation)
  3. Russian Academy of Sciences, Institute of Semiconductor Physics, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22156343
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 116; Journal Issue: 2; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION SPECTROSCOPY; BINDING ENERGY; CRYSTAL STRUCTURE; DISPERSIONS; ELECTRONIC STRUCTURE; ELLIPSOMETRY; ENERGY GAP; ENERGY-LOSS SPECTROSCOPY; EV RANGE; EXCITATION; FILMS; LUTETIUM OXIDES; MODIFICATIONS; OSCILLATIONS; PERMITTIVITY; REFRACTIVE INDEX; X-RAY PHOTOELECTRON SPECTROSCOPY; X-RAY SPECTROSCOPY