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Title: Structural characterization and electron-energy-loss spectroscopic study of pulsed laser deposited LiNbO₃ films on a-sapphire
Authors: Dai, Jiyan
Lam, H. K.
Li, Quan
Wang, Jie
Chan, Helen L. W.
Choy, Chung-loong
Subjects: Lithium compounds
Ferroelectric thin films
Amorphous state
Pulsed laser deposition
Dielectric function
Electronic density of states
Electron energy loss spectra
Valence bands
Conduction bands
Crystal orientation
Transmission electron microscopy
Issue Date: 1-Dec-2004
Publisher: American Institute of Physics
Source: Journal of applied physics, 1 Dec. 2004, v. 96, no. 11, p.6319-6322
Abstract: Highly c- and a-oriented LiNbO₃ films were deposited on a-sapphire substrates by pulsed laser deposition. The film microstructure and crystal orientation were studied by transmission electron microscopy, and the mechanism forming the different film orientations was interpreted in terms of the adatom energy and oxygen pressures. The electron-energy-loss functions derived from the electron-energy-loss spectra exhibit characteristic energy-loss peaks at about 7.0, 11.0, and 14.0 eV. These peaks correspond to electron transitions from the maximum density of the states in the valence band of O 2p to the split conduction band. The dielectric functions of the LiNbO₃ films were also derived from the energy-loss function.
Rights: © 2004 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J.Y. Dai et al. J. Appl. Phys. 96, 6319 (2004) and may be found at
Type: Journal/Magazine Article
ISSN: 0021-8979
Appears in Collections:AP Journal/Magazine Articles

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