Journal
APPLIED SURFACE SCIENCE
Volume 307, Issue -, Pages 455-460Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2014.04.056
Keywords
Indium oxide; Thin films; Epitaxial growth; Nanocomposites; Pulsed electron beam deposition (PED)
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Funding
- Romanian National Authority for Scientific Research, CNCS-UEFISCDI [PN-II-ID-PCE-2011-3-0566]
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Indium oxide thin films were grown by pulsed electron beam deposition method at 500 Con c-cut sapphire and (0 0 1) oriented LaAlO3 single crystal substrates in oxygen or argon gas. The effects of ambient gas and substrate symmetry on the growth of indium oxide thin films were studied. Stoichiometric In2O3 films are formed in oxygen, while oxygen deficient In2O2.5 films are grown in argon, with In metallic nanoclusters embedded in a In2O3 matrix (nanocomposite films). In both cases, epitaxial In2O3 films having the bixbyite phase were grown with various orientation relationships, depending upon the substrate symmetry and gas ambient (oxygen or argon). Domain matching epitaxy was used to describe the precise in-plane epitaxial film-substrate relationships. The differences in film texture were correlated to the differences in growth conditions, while the differences in the film properties were correlated to the film oxygen composition. (c) 2014 Elsevier B.V. All rights reserved.
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