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Oriented niobate ferroelectric thin films for electrical and optical devices and method of making such films

United States Patent

*** EXPIRED ***
May 19, 1998
View the Complete Patent at the US Patent & Trademark Office
Sr.sub.x Ba.sub.1-x Nb.sub.2 O.sub.6, where x is greater than 0.25 and less than 0.75, and KNbO.sub.3 ferroelectric thin films metalorganic chemical vapor deposited on amorphous or crystalline substrate surfaces to provide a crystal axis of the film exhibiting a high dielectric susceptibility, electro-optic coefficient, and/or nonlinear optic coefficient oriented preferentially in a direction relative to a crystalline or amorphous substrate surface. Such films can be used in electronic, electro-optic, and frequency doubling components.
Wessels; Bruce W. (Wilmette, IL), Nystrom; Michael J. (Germantown, MD)
Northwestern University (Evanston, IL)
08/ 491,672
June 19, 1995
CONTRACTURAL ORIGIN OF THE INVENTION This invention was made with Government support under grant Number: DMR-9120521 awarded by the National Science Foundation and the Department of Energy grant Number: DEFG 02 85 ER 45209. The Government may have certain rights in the invention.