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|Title:||Structural characterization and electron-energy-loss spectroscopic study of pulsed laser deposited LiNbO₃ films on a-sapphire|
Lam, H. K.
Chan, Helen L. W.
Ferroelectric thin films
Pulsed laser deposition
Electronic density of states
Electron energy loss spectra
Transmission electron microscopy
|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 http://link.aip.org/link/?jap/96/6319|
|Appears in Collections:||AP Journal/Magazine Articles|
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