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Epitaxial films of Li12xNb1–xWxO3 prepared by chemical solution deposition

Published online by Cambridge University Press:  31 January 2011

Charles D. E. Lakeman
Affiliation:
Department of Materials, University of California, Santa Barbara, California 93106
Yin Xia
Affiliation:
Department of Chemistry, University of California, Santa Barbara, California 93106
Jin-Hyeok Kim
Affiliation:
Department of Materials, University of California, Santa Barbara, California 93106
Xuehua Wu
Affiliation:
Department of Materials, University of California, Santa Barbara, California 93106
Hellmut G. Eckert
Affiliation:
Department of Chemistry, University of California, Santa Barbara, California 93106
Fred F. Lange
Affiliation:
Department of Materials, University of California, Santa Barbara, California 93106
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Abstract

The growth of epitaxial thin films of Li1–xNb1–xWxO3 from solution precursors on single-crystal LiNbO3 substrates is reported. An all-alkoxide solution readily gave single phase powders after simply mixing the constituent components, whereas an acetate-alkoxide system required additional solution processing stages to give phase pure powders. Heat treatment of films on single-crystal, basal plane LiNbO3 substrates at 600 °C formed a nanocrystalline, porous film which was converted to an epitaxial film after heating to 800 °C. Measurements of second harmonic generation in powders indicate an increase in SHG efficiency with increasing tungsten content. Optical absorption data for films were calculated using reflectance and transmittance spectroscopy data, and indicate a decrease in bandgap with increasing tungsten.

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Articles
Copyright
Copyright © Materials Research Society 1998

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