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Epitaxial KnbO3 and Fe-Doped KnbO3 Thin Films Prepared by the Sol-Gel Technique

Published online by Cambridge University Press:  10 February 2011

Yuhuan Xu ,
Chih-Hsing Cheng  and
John D. Mackenzie
Yuhuan Xu
Affiliation:
Department of Materials Science and Engineering, University of Califonia, Los Angeles, CA 90095, USA
Chih-Hsing Cheng
Affiliation:
Department of Materials Science and Engineering, University of Califonia, Los Angeles, CA 90095, USA
John D. Mackenzie
Affiliation:
Department of Materials Science and Engineering, University of Califonia, Los Angeles, CA 90095, USA
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Abstract

A mixed alkoxide liquid precursor was used to form epitaxial ferroelectric potassium niobate, KNbO3, thin films through the sol-gel technique by carefully designing the solution chemistry and reaction processes. The double alkoxide solution was prepared through hydrolysis and condensation reactions between different metal alkoxides in solution. Fabrication of heteroepitaxial single crystal thin films of KNbO3 deposited on single crystal substrates of MgO and SrTiO3 will be described. Film structure was investigated with X-ray and electron diffraction, and transmission electron microscopy. Second harmonic generation of 1064 nm incident light was demonstrated for KNbO3 thin films in a waveguide configuration. Transient photorefractive gratings in Fe-doped KNbO3 were studied by a two-beam coupling technique for various writing intensities and wavelengths.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 433: Symposium T – Ferroelectric Thin Films V , 1996 , 401
Copyright
Copyright © Materials Research Society 1996

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References

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